java基础(2)循环语句for、while、do...while

for

package util.demo;

public class Test01 {
   
    public static void main(String[] arg){
   
        //循环 for
        for(int i=0;i<5;i++){
   
            System.out.println("我是输出第"+(i+1)+"行");
        }
    }
}

while\do…while

package util.demo;

public class Test01 {
   
    public static void main(String[] arg) {
   

        int a = 3;
        while (a > 0) {
   
            System.out.println("当前a的值:" + a);
            a--;
        }
        int b = 10;
        do {
   
            System.out.println("当前b的值:" + b);
            b--;
        } while (b > 0);
    }
}