Java Studty.rar_Java笔记_java基础学习

package day1; public class ClassTest { public static void main(String[] args) { // TODO Auto-generated method stub ClassTest test = new ClassTest(); int x=8; int y=3; int a = test.add(x,y); int b = test.subtract(x,y); int c = test.multiply(x,y); int d = test.divide(x,y); System.out.println(a); System.out.println(b); System.out.println(c); System.out.println(d); test.output(); test.method(15); } //使用void关键字表示方法不返回值 public void output(){ System.out.println("Hello World"); } public void method(int a){ if (a<10) { return; } System.out.println("Welcome to Shengsiyuan!!"); } //两个整数相加的方法 public int add(int a ,int b){ return a+b; } //两个整数相减的方法 public int subtract(int a ,int b){ return a-b; } public int multiply(int a ,int b){ return a*b; } public int divide(int a ,int b){ return a/b; } }