流程控制

Java中涉及到流程的有两种

一种是 选择语句

一种是 循环语句

选择

if

public class IfTest {
    public static void main(String[] args) {
        int a = 10;
        int b = 9;
        if (a > b) {
            System.out.println("a>b");
        }
        System.out.println("b>a");
    }
}

switch

public class SwitchTest {
    public static void main(String[] args) {
        String name = "Gaoven";
        switch (name){
            case "Gaoven":
                System.out.println("I am Gaoven");
                break;
            case "xiaoMing":
                System.out.println("I am xiaoMing");
                break;
            default:
                System.out.println("执行失败");
        }
    }
}

循环

for

public class ForTest {
    public static void main(String[] args) {
        for (int i = 0; i < 10; i++) {
            System.out.println(i);
        }
    }
}

while

public class WhileTest {
    public static void main(String[] args) {
        int i = 0;
        while (i<=10){
            i++;
            System.out.println(i);
        }
    }
}