通过 Ubuntu 终端编译（On Windows 10）
Compiling through Ubuntu Terminal (On Windows 10)
我正在上一门关于编译器技术的课程。我已经创建了一个 g4 格式的文件，当我尝试使用 java 编译器 (javac) 编译它时，它会给我很多错误。
谁能解释我做错了什么？
下面我展示了我正在输入的内容以及我做错了什么。
我试着检查一下，如果我没有安装 antlr4，但我已经安装了，而且我确信我安装了。
是否通过 Microsoft Store 通过 Ubuntu 应用程序进行了每次安装，我在 Windows 10.
上使用 Ubuntu 终端
:~$ cd /mnt/c/Users/myUser/dato
:/mnt/c/Users/myUser/dato$ antlr4 dato.g4
:/mnt/c/Users/myUser/dato$ javac *.java
datoBaseListener.java:3: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.ParserRuleContext;
^
datoBaseListener.java:4: error: package org.antlr.v4.runtime.tree does not exist
import org.antlr.v4.runtime.tree.ErrorNode;
^
datoBaseListener.java:5: error: package org.antlr.v4.runtime.tree does not exist
import org.antlr.v4.runtime.tree.TerminalNode;
^
datoListener.java:2: error: package org.antlr.v4.runtime.tree does not exist
import org.antlr.v4.runtime.tree.ParseTreeListener;
^
datoListener.java:8: error: cannot find symbol
public interface datoListener extends ParseTreeListener {
^
symbol: class ParseTreeListener
datoParser.java:3: error: package org.antlr.v4.runtime.dfa does not exist
import org.antlr.v4.runtime.dfa.DFA;
^
datoParser.java:12: error: cannot find symbol
public class datoParser extends Parser {
^
symbol: class Parser
datoParser.java:92: error: cannot find symbol
public static class StartContext extends ParserRuleContext {
^
symbol: class ParserRuleContext
location: class datoParser
datoBaseListener.java:31: error: cannot find symbol
@Override public void enterEveryRule(ParserRuleContext ctx) { }
^
symbol: class ParserRuleContext
location: class datoBaseListener
datoBaseListener.java:37: error: cannot find symbol
@Override public void exitEveryRule(ParserRuleContext ctx) { }
^
symbol: class ParserRuleContext
location: class datoBaseListener
datoBaseListener.java:43: error: cannot find symbol
@Override public void visitTerminal(TerminalNode node) { }
^
symbol: class TerminalNode
location: class datoBaseListener
datoBaseListener.java:49: error: cannot find symbol
@Override public void visitErrorNode(ErrorNode node) { }
^
symbol: class ErrorNode
location: class datoBaseListener
datoParser.java:93: error: cannot find symbol
public Token d;
^
symbol: class Token
location: class StartContext
datoParser.java:94: error: cannot find symbol
public TerminalNode EOF() { return getToken(datoParser.EOF, 0); }
^
symbol: class TerminalNode
location: class StartContext
datoParser.java:95: error: cannot find symbol
public TerminalNode MYTOKEN() { return getToken(datoParser.MYTOKEN, 0); }
^
symbol: class TerminalNode
location: class StartContext
datoParser.java:96: error: cannot find symbol
public StartContext(ParserRuleContext parent, int invokingState) {
^
symbol: class ParserRuleContext
location: class StartContext
datoParser.java:101: error: cannot find symbol
public void enterRule(ParseTreeListener listener) {
^
symbol: class ParseTreeListener
location: class StartContext
datoParser.java:105: error: cannot find symbol
public void exitRule(ParseTreeListener listener) {
^
symbol: class ParseTreeListener
location: class StartContext
datoParser.java:15: error: cannot find symbol
protected static final DFA[] _decisionToDFA;
^
symbol: class DFA
location: class datoParser
datoParser.java:16: error: cannot find symbol
protected static final PredictionContextCache _sharedContextCache =
^
symbol: class PredictionContextCache
location: class datoParser
datoParser.java:43: error: cannot find symbol
public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
^
symbol: class Vocabulary
location: class datoParser
datoParser.java:72: error: cannot find symbol
public Vocabulary getVocabulary() {
^
symbol: class Vocabulary
location: class datoParser
datoParser.java:86: error: cannot find symbol
public ATN getATN() { return _ATN; }
^
symbol: class ATN
location: class datoParser
datoParser.java:88: error: cannot find symbol
public datoParser(TokenStream input) {
^
symbol: class TokenStream
location: class datoParser
datoParser.java:110: error: cannot find symbol
public final StartContext start() throws RecognitionException {
^
symbol: class RecognitionException
location: class datoParser
datoParser.java:137: error: cannot find symbol
public static final ATN _ATN =
^
symbol: class ATN
location: class datoParser
datoParser.java:2: error: package org.antlr.v4.runtime.atn does not exist
import org.antlr.v4.runtime.atn.*;
^
datoParser.java:4: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.*;
^
datoParser.java:5: error: package org.antlr.v4.runtime.misc does not exist
import org.antlr.v4.runtime.misc.*;
^
datoParser.java:6: error: package org.antlr.v4.runtime.tree does not exist
import org.antlr.v4.runtime.tree.*;
^
datoLexer.java:2: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.Lexer;
^
datoLexer.java:3: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.CharStream;
^
datoLexer.java:4: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.Token;
^
datoLexer.java:5: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.TokenStream;
^
datoLexer.java:8: error: package org.antlr.v4.runtime.dfa does not exist
import org.antlr.v4.runtime.dfa.DFA;
^
datoLexer.java:12: error: cannot find symbol
public class datoLexer extends Lexer {
^
symbol: class Lexer
datoLexer.java:15: error: cannot find symbol
protected static final DFA[] _decisionToDFA;
^
symbol: class DFA
location: class datoLexer
datoLexer.java:16: error: cannot find symbol
protected static final PredictionContextCache _sharedContextCache =
^
symbol: class PredictionContextCache
location: class datoLexer
datoLexer.java:50: error: cannot find symbol
public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
^
symbol: class Vocabulary
location: class datoLexer
datoLexer.java:79: error: cannot find symbol
public Vocabulary getVocabulary() {
^
symbol: class Vocabulary
location: class datoLexer
datoLexer.java:84: error: cannot find symbol
public datoLexer(CharStream input) {
^
symbol: class CharStream
location: class datoLexer
datoLexer.java:105: error: cannot find symbol
public ATN getATN() { return _ATN; }
^
symbol: class ATN
location: class datoLexer
datoLexer.java:136: error: cannot find symbol
public static final ATN _ATN =
^
symbol: class ATN
location: class datoLexer
datoLexer.java:6: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.*;
^
datoLexer.java:7: error: package org.antlr.v4.runtime.atn does not exist
import org.antlr.v4.runtime.atn.*;
^
datoLexer.java:9: error: package org.antlr.v4.runtime.misc does not exist
import org.antlr.v4.runtime.misc.*;
^
datoBaseListener.java:31: error: method does not override or implement a method from a supertype
@Override public void enterEveryRule(ParserRuleContext ctx) { }
^
datoBaseListener.java:37: error: method does not override or implement a method from a supertype
@Override public void exitEveryRule(ParserRuleContext ctx) { }
^
datoBaseListener.java:43: error: method does not override or implement a method from a supertype
@Override public void visitTerminal(TerminalNode node) { }
^
datoBaseListener.java:49: error: method does not override or implement a method from a supertype
@Override public void visitErrorNode(ErrorNode node) { }
^
datoParser.java:13: error: cannot find symbol
static { RuntimeMetaData.checkVersion("4.7.2", RuntimeMetaData.VERSION); }
^
symbol: variable RuntimeMetaData
location: class datoParser
datoParser.java:13: error: cannot find symbol
static { RuntimeMetaData.checkVersion("4.7.2", RuntimeMetaData.VERSION); }
^
symbol: variable RuntimeMetaData
location: class datoParser
datoParser.java:17: error: cannot find symbol
new PredictionContextCache();
^
symbol: class PredictionContextCache
location: class datoParser
datoParser.java:43: error: cannot find symbol
public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
^
symbol: class VocabularyImpl
location: class datoParser
datoParser.java:64: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:70: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:76: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:79: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:82: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:85: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:90: error: cannot find symbol
_interp = new ParserATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
^
symbol: variable _interp
location: class datoParser
datoParser.java:90: error: cannot find symbol
_interp = new ParserATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
^
symbol: class ParserATNSimulator
location: class datoParser
datoParser.java:94: error: cannot find symbol
public TerminalNode EOF() { return getToken(datoParser.EOF, 0); }
^
symbol: variable EOF
location: class datoParser
datoParser.java:95: error: cannot find symbol
public TerminalNode MYTOKEN() { return getToken(datoParser.MYTOKEN, 0); }
^
symbol: method getToken(int,int)
location: class StartContext
datoParser.java:99: error: method does not override or implement a method from a supertype
@Override public int getRuleIndex() { return RULE_start; }
^
datoParser.java:100: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:104: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:111: error: cannot find symbol
StartContext _localctx = new StartContext(_ctx, getState());
^
symbol: variable _ctx
location: class datoParser
datoParser.java:111: error: cannot find symbol
StartContext _localctx = new StartContext(_ctx, getState());
^
symbol: method getState()
location: class datoParser
datoParser.java:112: error: cannot find symbol
enterRule(_localctx, 0, RULE_start);
^
symbol: method enterRule(StartContext,int,int)
location: class datoParser
datoParser.java:114: error: cannot find symbol
enterOuterAlt(_localctx, 1);
^
symbol: method enterOuterAlt(StartContext,int)
location: class datoParser
datoParser.java:116: error: cannot find symbol
setState(2);
^
symbol: method setState(int)
location: class datoParser
datoParser.java:117: error: cannot find symbol
((StartContext)_localctx).d = match(MYTOKEN);
^
symbol: method match(int)
location: class datoParser
datoParser.java:118: error: cannot find symbol
setState(3);
^
symbol: method setState(int)
location: class datoParser
datoParser.java:119: error: cannot find symbol
match(EOF);
^
symbol: variable EOF
location: class datoParser
datoParser.java:122: error: cannot find symbol
catch (RecognitionException re) {
^
symbol: class RecognitionException
location: class datoParser
datoParser.java:123: error: cannot find symbol
_localctx.exception = re;
^
symbol: variable exception
location: variable _localctx of type StartContext
datoParser.java:124: error: cannot find symbol
_errHandler.reportError(this, re);
^
symbol: variable _errHandler
location: class datoParser
datoParser.java:125: error: cannot find symbol
_errHandler.recover(this, re);
^
symbol: variable _errHandler
location: class datoParser
datoParser.java:128: error: cannot find symbol
exitRule();
^
symbol: method exitRule()
location: class datoParser
datoParser.java:138: error: cannot find symbol
new ATNDeserializer().deserialize(_serializedATN.toCharArray());
^
symbol: class ATNDeserializer
location: class datoParser
datoParser.java:140: error: cannot find symbol
_decisionToDFA = new DFA[_ATN.getNumberOfDecisions()];
^
symbol: class DFA
location: class datoParser
datoParser.java:142: error: cannot find symbol
_decisionToDFA[i] = new DFA(_ATN.getDecisionState(i), i);
^
symbol: class DFA
location: class datoParser
datoLexer.java:13: error: cannot find symbol
static { RuntimeMetaData.checkVersion("4.7.2", RuntimeMetaData.VERSION); }
^
symbol: variable RuntimeMetaData
location: class datoLexer
datoLexer.java:13: error: cannot find symbol
static { RuntimeMetaData.checkVersion("4.7.2", RuntimeMetaData.VERSION); }
^
symbol: variable RuntimeMetaData
location: class datoLexer
datoLexer.java:17: error: cannot find symbol
new PredictionContextCache();
^
symbol: class PredictionContextCache
location: class datoLexer
datoLexer.java:50: error: cannot find symbol
public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
^
symbol: class VocabularyImpl
location: class datoLexer
datoLexer.java:71: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:77: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:86: error: cannot find symbol
_interp = new LexerATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
^
symbol: variable _interp
location: class datoLexer
datoLexer.java:86: error: cannot find symbol
_interp = new LexerATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
^
symbol: class LexerATNSimulator
location: class datoLexer
datoLexer.java:89: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:92: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:95: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:98: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:101: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:104: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:137: error: cannot find symbol
new ATNDeserializer().deserialize(_serializedATN.toCharArray());
^
symbol: class ATNDeserializer
location: class datoLexer
datoLexer.java:139: error: cannot find symbol
_decisionToDFA = new DFA[_ATN.getNumberOfDecisions()];
^
symbol: class DFA
location: class datoLexer
datoLexer.java:141: error: cannot find symbol
_decisionToDFA[i] = new DFA(_ATN.getDecisionState(i), i);
^
symbol: class DFA
location: class datoLexer
100 errors
:/mnt/c/Users/myUser/dato$ sudo apt install antlr4
[sudo] password for ACCOUNT:
Reading package lists... Done
Building dependency tree
Reading state information... Done
antlr4 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
:/mnt/c/Users/myUser/dato$
为什么会出现这些错误？我使用了错误的命令吗？
Java编译器找不到ANTLR运行时类（这就是error: package org.antlr.v4.runtime does not exist错误的意思）。也就是说，antlr-4.8-complete.jar中的类are not properly added to your CLASSPATH.
忘记这些命令的任何别名：了解如何编译 Java 类 自己。
首先确保文件 antlr-4.8-complete.jar 和 dato.g4 在同一个文件夹中，然后打开终端和 CD 进入此文件夹。
1 生成解析器
java -cp antlr-4.8-complete.jar org.antlr.v4.Tool dato.g4
2编译Java个文件
Windows
javac -cp .;antlr-4.8-complete.jar *.java
*尼克斯
javac -cp .:antlr-4.8-complete.jar *.java
我正在上一门关于编译器技术的课程。我已经创建了一个 g4 格式的文件，当我尝试使用 java 编译器 (javac) 编译它时，它会给我很多错误。
谁能解释我做错了什么？
下面我展示了我正在输入的内容以及我做错了什么。 我试着检查一下，如果我没有安装 antlr4，但我已经安装了，而且我确信我安装了。 是否通过 Microsoft Store 通过 Ubuntu 应用程序进行了每次安装，我在 Windows 10.
上使用 Ubuntu 终端:~$ cd /mnt/c/Users/myUser/dato
:/mnt/c/Users/myUser/dato$ antlr4 dato.g4
:/mnt/c/Users/myUser/dato$ javac *.java
datoBaseListener.java:3: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.ParserRuleContext;
^
datoBaseListener.java:4: error: package org.antlr.v4.runtime.tree does not exist
import org.antlr.v4.runtime.tree.ErrorNode;
^
datoBaseListener.java:5: error: package org.antlr.v4.runtime.tree does not exist
import org.antlr.v4.runtime.tree.TerminalNode;
^
datoListener.java:2: error: package org.antlr.v4.runtime.tree does not exist
import org.antlr.v4.runtime.tree.ParseTreeListener;
^
datoListener.java:8: error: cannot find symbol
public interface datoListener extends ParseTreeListener {
^
symbol: class ParseTreeListener
datoParser.java:3: error: package org.antlr.v4.runtime.dfa does not exist
import org.antlr.v4.runtime.dfa.DFA;
^
datoParser.java:12: error: cannot find symbol
public class datoParser extends Parser {
^
symbol: class Parser
datoParser.java:92: error: cannot find symbol
public static class StartContext extends ParserRuleContext {
^
symbol: class ParserRuleContext
location: class datoParser
datoBaseListener.java:31: error: cannot find symbol
@Override public void enterEveryRule(ParserRuleContext ctx) { }
^
symbol: class ParserRuleContext
location: class datoBaseListener
datoBaseListener.java:37: error: cannot find symbol
@Override public void exitEveryRule(ParserRuleContext ctx) { }
^
symbol: class ParserRuleContext
location: class datoBaseListener
datoBaseListener.java:43: error: cannot find symbol
@Override public void visitTerminal(TerminalNode node) { }
^
symbol: class TerminalNode
location: class datoBaseListener
datoBaseListener.java:49: error: cannot find symbol
@Override public void visitErrorNode(ErrorNode node) { }
^
symbol: class ErrorNode
location: class datoBaseListener
datoParser.java:93: error: cannot find symbol
public Token d;
^
symbol: class Token
location: class StartContext
datoParser.java:94: error: cannot find symbol
public TerminalNode EOF() { return getToken(datoParser.EOF, 0); }
^
symbol: class TerminalNode
location: class StartContext
datoParser.java:95: error: cannot find symbol
public TerminalNode MYTOKEN() { return getToken(datoParser.MYTOKEN, 0); }
^
symbol: class TerminalNode
location: class StartContext
datoParser.java:96: error: cannot find symbol
public StartContext(ParserRuleContext parent, int invokingState) {
^
symbol: class ParserRuleContext
location: class StartContext
datoParser.java:101: error: cannot find symbol
public void enterRule(ParseTreeListener listener) {
^
symbol: class ParseTreeListener
location: class StartContext
datoParser.java:105: error: cannot find symbol
public void exitRule(ParseTreeListener listener) {
^
symbol: class ParseTreeListener
location: class StartContext
datoParser.java:15: error: cannot find symbol
protected static final DFA[] _decisionToDFA;
^
symbol: class DFA
location: class datoParser
datoParser.java:16: error: cannot find symbol
protected static final PredictionContextCache _sharedContextCache =
^
symbol: class PredictionContextCache
location: class datoParser
datoParser.java:43: error: cannot find symbol
public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
^
symbol: class Vocabulary
location: class datoParser
datoParser.java:72: error: cannot find symbol
public Vocabulary getVocabulary() {
^
symbol: class Vocabulary
location: class datoParser
datoParser.java:86: error: cannot find symbol
public ATN getATN() { return _ATN; }
^
symbol: class ATN
location: class datoParser
datoParser.java:88: error: cannot find symbol
public datoParser(TokenStream input) {
^
symbol: class TokenStream
location: class datoParser
datoParser.java:110: error: cannot find symbol
public final StartContext start() throws RecognitionException {
^
symbol: class RecognitionException
location: class datoParser
datoParser.java:137: error: cannot find symbol
public static final ATN _ATN =
^
symbol: class ATN
location: class datoParser
datoParser.java:2: error: package org.antlr.v4.runtime.atn does not exist
import org.antlr.v4.runtime.atn.*;
^
datoParser.java:4: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.*;
^
datoParser.java:5: error: package org.antlr.v4.runtime.misc does not exist
import org.antlr.v4.runtime.misc.*;
^
datoParser.java:6: error: package org.antlr.v4.runtime.tree does not exist
import org.antlr.v4.runtime.tree.*;
^
datoLexer.java:2: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.Lexer;
^
datoLexer.java:3: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.CharStream;
^
datoLexer.java:4: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.Token;
^
datoLexer.java:5: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.TokenStream;
^
datoLexer.java:8: error: package org.antlr.v4.runtime.dfa does not exist
import org.antlr.v4.runtime.dfa.DFA;
^
datoLexer.java:12: error: cannot find symbol
public class datoLexer extends Lexer {
^
symbol: class Lexer
datoLexer.java:15: error: cannot find symbol
protected static final DFA[] _decisionToDFA;
^
symbol: class DFA
location: class datoLexer
datoLexer.java:16: error: cannot find symbol
protected static final PredictionContextCache _sharedContextCache =
^
symbol: class PredictionContextCache
location: class datoLexer
datoLexer.java:50: error: cannot find symbol
public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
^
symbol: class Vocabulary
location: class datoLexer
datoLexer.java:79: error: cannot find symbol
public Vocabulary getVocabulary() {
^
symbol: class Vocabulary
location: class datoLexer
datoLexer.java:84: error: cannot find symbol
public datoLexer(CharStream input) {
^
symbol: class CharStream
location: class datoLexer
datoLexer.java:105: error: cannot find symbol
public ATN getATN() { return _ATN; }
^
symbol: class ATN
location: class datoLexer
datoLexer.java:136: error: cannot find symbol
public static final ATN _ATN =
^
symbol: class ATN
location: class datoLexer
datoLexer.java:6: error: package org.antlr.v4.runtime does not exist
import org.antlr.v4.runtime.*;
^
datoLexer.java:7: error: package org.antlr.v4.runtime.atn does not exist
import org.antlr.v4.runtime.atn.*;
^
datoLexer.java:9: error: package org.antlr.v4.runtime.misc does not exist
import org.antlr.v4.runtime.misc.*;
^
datoBaseListener.java:31: error: method does not override or implement a method from a supertype
@Override public void enterEveryRule(ParserRuleContext ctx) { }
^
datoBaseListener.java:37: error: method does not override or implement a method from a supertype
@Override public void exitEveryRule(ParserRuleContext ctx) { }
^
datoBaseListener.java:43: error: method does not override or implement a method from a supertype
@Override public void visitTerminal(TerminalNode node) { }
^
datoBaseListener.java:49: error: method does not override or implement a method from a supertype
@Override public void visitErrorNode(ErrorNode node) { }
^
datoParser.java:13: error: cannot find symbol
static { RuntimeMetaData.checkVersion("4.7.2", RuntimeMetaData.VERSION); }
^
symbol: variable RuntimeMetaData
location: class datoParser
datoParser.java:13: error: cannot find symbol
static { RuntimeMetaData.checkVersion("4.7.2", RuntimeMetaData.VERSION); }
^
symbol: variable RuntimeMetaData
location: class datoParser
datoParser.java:17: error: cannot find symbol
new PredictionContextCache();
^
symbol: class PredictionContextCache
location: class datoParser
datoParser.java:43: error: cannot find symbol
public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
^
symbol: class VocabularyImpl
location: class datoParser
datoParser.java:64: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:70: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:76: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:79: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:82: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:85: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:90: error: cannot find symbol
_interp = new ParserATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
^
symbol: variable _interp
location: class datoParser
datoParser.java:90: error: cannot find symbol
_interp = new ParserATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
^
symbol: class ParserATNSimulator
location: class datoParser
datoParser.java:94: error: cannot find symbol
public TerminalNode EOF() { return getToken(datoParser.EOF, 0); }
^
symbol: variable EOF
location: class datoParser
datoParser.java:95: error: cannot find symbol
public TerminalNode MYTOKEN() { return getToken(datoParser.MYTOKEN, 0); }
^
symbol: method getToken(int,int)
location: class StartContext
datoParser.java:99: error: method does not override or implement a method from a supertype
@Override public int getRuleIndex() { return RULE_start; }
^
datoParser.java:100: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:104: error: method does not override or implement a method from a supertype
@Override
^
datoParser.java:111: error: cannot find symbol
StartContext _localctx = new StartContext(_ctx, getState());
^
symbol: variable _ctx
location: class datoParser
datoParser.java:111: error: cannot find symbol
StartContext _localctx = new StartContext(_ctx, getState());
^
symbol: method getState()
location: class datoParser
datoParser.java:112: error: cannot find symbol
enterRule(_localctx, 0, RULE_start);
^
symbol: method enterRule(StartContext,int,int)
location: class datoParser
datoParser.java:114: error: cannot find symbol
enterOuterAlt(_localctx, 1);
^
symbol: method enterOuterAlt(StartContext,int)
location: class datoParser
datoParser.java:116: error: cannot find symbol
setState(2);
^
symbol: method setState(int)
location: class datoParser
datoParser.java:117: error: cannot find symbol
((StartContext)_localctx).d = match(MYTOKEN);
^
symbol: method match(int)
location: class datoParser
datoParser.java:118: error: cannot find symbol
setState(3);
^
symbol: method setState(int)
location: class datoParser
datoParser.java:119: error: cannot find symbol
match(EOF);
^
symbol: variable EOF
location: class datoParser
datoParser.java:122: error: cannot find symbol
catch (RecognitionException re) {
^
symbol: class RecognitionException
location: class datoParser
datoParser.java:123: error: cannot find symbol
_localctx.exception = re;
^
symbol: variable exception
location: variable _localctx of type StartContext
datoParser.java:124: error: cannot find symbol
_errHandler.reportError(this, re);
^
symbol: variable _errHandler
location: class datoParser
datoParser.java:125: error: cannot find symbol
_errHandler.recover(this, re);
^
symbol: variable _errHandler
location: class datoParser
datoParser.java:128: error: cannot find symbol
exitRule();
^
symbol: method exitRule()
location: class datoParser
datoParser.java:138: error: cannot find symbol
new ATNDeserializer().deserialize(_serializedATN.toCharArray());
^
symbol: class ATNDeserializer
location: class datoParser
datoParser.java:140: error: cannot find symbol
_decisionToDFA = new DFA[_ATN.getNumberOfDecisions()];
^
symbol: class DFA
location: class datoParser
datoParser.java:142: error: cannot find symbol
_decisionToDFA[i] = new DFA(_ATN.getDecisionState(i), i);
^
symbol: class DFA
location: class datoParser
datoLexer.java:13: error: cannot find symbol
static { RuntimeMetaData.checkVersion("4.7.2", RuntimeMetaData.VERSION); }
^
symbol: variable RuntimeMetaData
location: class datoLexer
datoLexer.java:13: error: cannot find symbol
static { RuntimeMetaData.checkVersion("4.7.2", RuntimeMetaData.VERSION); }
^
symbol: variable RuntimeMetaData
location: class datoLexer
datoLexer.java:17: error: cannot find symbol
new PredictionContextCache();
^
symbol: class PredictionContextCache
location: class datoLexer
datoLexer.java:50: error: cannot find symbol
public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
^
symbol: class VocabularyImpl
location: class datoLexer
datoLexer.java:71: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:77: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:86: error: cannot find symbol
_interp = new LexerATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
^
symbol: variable _interp
location: class datoLexer
datoLexer.java:86: error: cannot find symbol
_interp = new LexerATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
^
symbol: class LexerATNSimulator
location: class datoLexer
datoLexer.java:89: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:92: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:95: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:98: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:101: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:104: error: method does not override or implement a method from a supertype
@Override
^
datoLexer.java:137: error: cannot find symbol
new ATNDeserializer().deserialize(_serializedATN.toCharArray());
^
symbol: class ATNDeserializer
location: class datoLexer
datoLexer.java:139: error: cannot find symbol
_decisionToDFA = new DFA[_ATN.getNumberOfDecisions()];
^
symbol: class DFA
location: class datoLexer
datoLexer.java:141: error: cannot find symbol
_decisionToDFA[i] = new DFA(_ATN.getDecisionState(i), i);
^
symbol: class DFA
location: class datoLexer
100 errors
:/mnt/c/Users/myUser/dato$ sudo apt install antlr4
[sudo] password for ACCOUNT:
Reading package lists... Done
Building dependency tree
Reading state information... Done
antlr4 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
:/mnt/c/Users/myUser/dato$
为什么会出现这些错误？我使用了错误的命令吗？
Java编译器找不到ANTLR运行时类（这就是error: package org.antlr.v4.runtime does not exist错误的意思）。也就是说，antlr-4.8-complete.jar中的类are not properly added to your CLASSPATH.
忘记这些命令的任何别名：了解如何编译 Java 类 自己。
首先确保文件 antlr-4.8-complete.jar 和 dato.g4 在同一个文件夹中，然后打开终端和 CD 进入此文件夹。
1 生成解析器
java -cp antlr-4.8-complete.jar org.antlr.v4.Tool dato.g4
2编译Java个文件
Windowsjavac -cp .;antlr-4.8-complete.jar *.java
javac -cp .:antlr-4.8-complete.jar *.java