Java

Question

我目前有一个 3 class java 应用程序，我正在尝试使用 JavaFX 创建一个简单的游戏。在我的 GameCore class 中，我正在尝试创建一个 gameGrid 实例。但是当我使用 "grid = new gameGrid(int, int, int, int);" 时，eclipse 告诉我 gameGrid 未定义并建议我创建该方法，当我按照 eclipse 的要求执行时，它在我的 gameCore class 中放置了一个私有方法 gameGrid，但 gameGrid 应该是gameGrid.class 的构造函数。我已经重启了项目，清理了项目也无济于事

public class gameCore {

    gameGrid grid;

    public gameCore(){
        getGrid();
    }

    public void getGrid(){
        grid = gameGrid(32, 32, 10, 10); //Error is here, underlining "gameGrid"
//Also using gameGrid.gameGrid(32,32,10,10); does not work either, still says its undefined

/*
This is the code that Eclipse wants to place when I let it fix the error, and it places this code in this class.
private gameGrid gameGrid(int i, int j, int k, int l) {
        // TODO Auto-generated method stub
        return null;
    }
*/

    }

}

public class gameGrid {

    protected int[][] grid;
    protected int tileWidth;
    protected int tileHeight;

    public gameGrid(int tileWidth, int tileHeight, int horizTileCount, int vertTileCount){
        //Create Grid Object

        grid = new int[vertTileCount][];
        for(int y = 0; y < vertTileCount; y++){
            for(int x = 0; x < horizTileCount; x++){
                grid[y] = new int[horizTileCount];
            }
        }

        this.tileWidth = tileWidth;
        this.tileHeight = tileHeight;
    }
}

import java.awt.Dimension;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class gameGUI extends Application {

    Dimension screenDimensions = new Dimension(java.awt.Toolkit.getDefaultToolkit().getScreenSize());

    public static void main(String[] args){
        launch(args);
    }

    public void start(Stage stage) throws Exception {
        Canvas c = new Canvas();
        StackPane sp = new StackPane();
        Scene scene = new Scene(sp, screenDimensions.width, screenDimensions.height);

        sp.getChildren().add(c);
        stage.setScene(scene);

        gameCore game = new gameCore();



        stage.show();


    }

}

Answer 1

您缺少的是 "new" 用于实例化，即。 e.你需要写

grid = new gameGrid(32, 32, 10, 10);

在Java 类中以大写字母开头，你应该read the guidelines.

如果您想在 JavaFX 中看到使用 java 个节点而不是 canvas 完成的网格，您可以查看我最近问的问题。

Java - Eclipse 中未定义的方法

Java - Method Undefined in Eclipse

javafx