Java For Loop

Java For Loop

Simple For Loop

For-each or Enhanced For Loop

Labeled For Loop

Example

import java.util.Arrays;
import java.util.List;

import org.junit.Test;

public class ForExample {
    @Test
    public void test() {
        // Simple For Loop
        for (int i = 1; i <= 10; i++) {
            System.out.println(i);
        }
        System.out.println("---------------------");
    }

    @Test
    public void test1() {
        int arr[] = { 12, 23, 44, 56, 78 };
        // Printing array using for-each loop
        for (int i : arr) {
            System.out.println(i);
        }
        System.out.println("---------------------");
    }

    @Test
    public void test2() {
        List<Integer> list = Arrays.asList(12, 23, 44, 56, 78);
        list.stream().forEach((i) -> System.out.println(i));
        System.out.println("---------------------");
    }

    @Test
    public void test3() {
        for (int i = 1; i <= 3; i++) {
            bb: for (int j = 1; j <= 3; j++) {
                if (i == 2 && j == 2) {
                    break bb;
                }
                System.out.println(i + " " + j);
            }
        }
        System.out.println("---------------------");
    }

    @Test
    public void test4() {
        aa: for (int i = 1; i <= 3; i++) {
            for (int j = 1; j <= 3; j++) {
                if (i == 2 && j == 2) {
                    break aa;
                }
                System.out.println(i + " " + j);
            }
        }
    }

    @Test
    public void test5() {
        // 死循环
        for (;;) {
            System.out.println("infinitive loop");
        }
    }

}

Java For Loop

原文：https://www.cnblogs.com/hglibin/p/9512309.html