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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