3、定义一个笔记本类,该类有颜色(char)和cpu
型号(int)两个属性。 [必做题]
• 3.1 无参和有参的两个构造方法;有参构造方法可
以在创建对象的同时为每个属性赋值;
• 3.2 输出笔记本信息的方法
• 3.3 然后编写一个测试类,测试笔记本类的各个
方法。
package chap1; public class Main { public static void main(String[] args){ } char colour; int cpu; public char getYs() { return colour='q'; } public int getCpu() { return cpu=865; } public void shuchu() { System.out.println("颜色是:"+getYs()+" "+"cpu型号是:"+getCpu()); } }
package chap1; public class Main { public static void main(String[] args){ } char colour; int number; note (){ } note(char colour ,int number) { this.colour=colour; this.number=number; } void a() { System.out.println("颜色:"+colour+"型号"+number); } public static void main(String[] args) { note a =new note ('a',6589); a.a(); } }
5、定义两个类,描述如下: [必做题]
• 5.1定义一个人类Person:
• 5.1.1定义一个方法sayHello(),可以向对方发出问
候语“hello,my name is XXX”
• 5.1.2有三个属性:名字、身高、体重
• 5.2定义一个PersonCreate类:
• 5.2.1创建两个对象,分别是zhangsan,33岁,1.73
;lishi,44,1.74
• 5.2.2分别调用对象的sayHello()方法。
package chap1; public class Main { String name; double height; int age; void note(String name, double height, int age) { this.name = name; this.height = height; this.age = age; } void sayHello() { System.out.println("hello,my name is " + name+" "+height+"m"+" "+age+"岁"); } public static void main(String[] args) { note a = new note(); a.sayHello(); } }
package chap1; public class Main { String name; double height; int age; void note(String name, double height, int age) { this.name = name; this.height = height; this.age = age; } void sayHello() { System.out.println("hello,my name is " + name+" "+height+"m"+" "+age+"岁"); } public static void main(String[] args) { note a = new note(); a.sayHello(); } }