如何在Java中连接两个字符串？ [英] How do I concatenate two strings in Java?

问题描述

我试图在Java中连接字符串。为什么这不起作用？

I am trying to concatenate strings in Java. Why isn't this working?

public class StackOverflowTest {  
    public static void main(String args[]) {
        int theNumber = 42;
        System.out.println("Your number is " . theNumber . "!");
    }
}

推荐答案

你可以使用 + 运算符连接字符串：

You can concatenate Strings using the + operator:

System.out.println("Your number is " + theNumber + "!");

theNumber 隐式转换为String 42。

theNumber is implicitly converted to the String "42".

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