Java 从同一字符串中的每个单词中提取恰好 3 个字母的子字符串

Question

我有这个练习，其中我必须使用子字符串并且从每个月开始只显示前 3 个字母，Jan、Feb 等。我知道我必须使用 months.substring( 0,3) 或类似的东西，但我不知道用它做一个程序，你能告诉我怎么做吗？

 String months[] = {"January ", "February ", "March ", "April ", "Mai ",
 "June ", "July ", "August ", "September ", "October ", "November  ", "December "};

Answer 1

这就是您要找的

for(String month : months){
   System.out.print(month.substring(0, 3) + " ");
}

Java 从同一字符串中的每个单词中提取恰好 3 个字母的子字符串

Java substring exactly 3 letters from each word in the same string

java

substring