JAVA今日2021.8.1

JAVA运算符

package JAVASE;

public class 运算符07 {
    public static void main(String[] args) {
        int a = 10;
        int b = 20;
        a+=b;    //a=a+b
        System.out.println(a);//30
        a-=b;    //a=a-b
        System.out.println(a);//10
        //字符串连接符        +   ,String
        System.out.println(a+b);
        System.out.println(""+a+b);
        System.out.println(a+b+"");


        //三元运算符
        //x?y:z
        //如果x==true，则结果为y，否则为z
        int score = 80;
        String type = score<60?"不及格":"及格";
        System.out.println(type);//及格


    }
}

2021.8.1