What is the function of return statement in java

The return statement in Java has two functions, namely:

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1. Return the value of the type specified by the method (this value is always determined);

2. End the execution of the method (just a return statement).

The return statement is used in methods with non-void return value types. It can not only return basic types, but also objects (including user-defined classes).

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Example:

/**
* Created by IntelliJ IDEA.
* User: leizhimin
* Date: 2007-12-3
* Time: 8:54:28
* Java中的return语句使用总结
*/
public class TestReturn {
    public static void main(String args[]) {
       TestReturn t = new TestReturn();
        t.test1();
        t.test2();
    }

    /**
     * 无返回值类型的return语句测试
     */
    public void test1() {
        System.out.println("---------无返回值类型的return语句测试--------");
        for (int i = 1; ; i++) {
            if (i == 4) return;
            System.out.println("i = " + i);
        }
    }

    /**
     * 有返回值类型的return语句测试
     * @return String
     */
    public String test2(){
        System.out.println("---------有返回值类型的return语句测试--------");
        return "返回一个字符串";
    }
}

Run result:

---------无返回值类型的return语句测试--------
i = 1
i = 2
i = 3
---------有返回值类型的return语句测试--------

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