【JAVA】调用类中的属性

class person { String name; int age; String like; void setName(String name) { this.name = name; } void setAge(int age) { this.age =age; } void setLike(String like) { this.like=like; } void talk() { System.out.println( "我是：" + name + "，今年：" + age + "岁," + "喜欢：" + like ); } } public class classwork { public static void main( String[] args ) { person p = new person(); p.setName( "小明"); p.setAge(20); p.setLike("音乐"); p.talk(); } }

 

class Book { String title ; double price ; public void printInfo() // 书籍信息 { System.out.println("书的名字：" + title + "，价格：" + price) ; } } public class work2 { public static void main(String args[]) { Book bookA = new Book() ; Book bookB = new Book() ; bookA.title = "程序设计" ; bookA.price = 40.7 ; bookB.title = "C语言" ; bookB.price = 33.9 ; bookB = bookA ; bookA.printInfo() ; bookB.printInfo(); } }

 

class Books { private String title; private double price ; String pub = "天天精彩出版社" ; public Books(String title,double price) { this.title = title ; this.price = price ; } public String getInfo() { return "图书名称：" + this.title + "，价格：" + this.price + "元，出版社：" + this.pub ; } } public class work3 { public static void main(String args[]) { Books b1 = new Books("Java开发实战经典",59.8) ; Books b2 = new Books("Java WEB开发实战经典（基础篇）",49.9) ; Books b3 = new Books("Android开发实战经典",68) ; System.out.println(b1.getInfo()) ; System.out.println(b2.getInfo()) ; System.out.println(b3.getInfo()) ; System.out.println("----------------------出版社改名之后-------------------------") ; b1.pub = "每日精彩出版社" ; b2.pub = "每日精彩出版社" ; b3.pub = "每日精彩出版社" ; System.out.println(b1.getInfo()) ; System.out.println(b2.getInfo()) ; System.out.println(b3.getInfo()) ; } }

 

转载于:https://www.cnblogs.com/zhaocundang/p/4887999.html