面向对象day01

package oop;

public class Demo1 {
    public static void main(String[] args) {
        Demo1 demo1 = new Demo1();
        System.out.println(demo1.sayHello());
        System.out.println(demo1.max(2,3));
    }

    /*修饰符 返回值类型 方法名（...）{
    方法体
    }*/
    public String sayHello(){
        return "hello world";
    }

    public int max(int a, int b){
        return a>b ? a:b;   //三元运算符
    }
}

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输出结果

hello world
3