Java System.exit(0) 的使用

Use of System.exit(0)

提问by Warrior

public class WrapperTest {
    static {
        print(10);
    }

    static void print(int x) {
        System.out.println(x);
        System.exit(0);
    }
}

In the above code System.exit(0)is used to stop the program. What argument does that method take? Why do we gave it as 0. Can anyone explain the concept?

在上面的代码中System.exit(0)是用来停止程序的。该方法采用什么参数？为什么我们把它作为0. 谁能解释一下这个概念？

采纳答案by Xn0vv3r

From the JAVA Documentation:

从JAVA 文档：

The argument serves as a status code; by convention, a nonzero status code indicates abnormal termination.

参数用作状态代码；按照惯例，非零状态代码表示异常终止。

And Wikipediaadds additional information.

和维基百科增加了额外的信息。

回答by Joachim Sauer

It's the return value that the Java process will report to the calling process.

它是 Java 进程将报告给调用进程的返回值。

It hasn't really got a precise definition, but the usual convention is that 0means success and any non-zero value represents a failure.

它并没有真正的精确定义，但通常的约定是这0意味着成功，任何非零值都表示失败。

回答by Michael Borgwardt

The argument is the return code which the java process will return (0 means "successful"). It can be used when a Java program is a part of a batch script, or by build tools such as Ant.

参数是 java 进程将返回的返回码（0 表示“成功”）。当 Java 程序是批处理脚本的一部分时，或由构建工具（如 Ant）使用时，可以使用它。

回答by hhafez

Have a look here

看看这里

The argument serves as a status code; by convention, a nonzero status code indicates abnormal termination.

参数用作状态代码；按照惯例，非零状态代码表示异常终止。