• 11.5作业


     1 package com.baidu;
     2 public class TestSimpleCircle {
     3     public static void main(String[] args) {
     4         SimpleCircle circle1 = new SimpleCircle();
     5         System.out.println("The area of the cricle of radius " + circle1.radius + " is " + circle1.getArea());
     6         
     7         SimpleCircle circle2 = new SimpleCircle(25);
     8         System.out.println("The area of the circle of radius " + circle2.radius + " is " + circle2.getArea());
     9         
    10         SimpleCircle circle3 = new SimpleCircle(125);
    11         System.out.println("The area of the circle of radius " + circle3.radius + " is " + circle3.getArea());
    12         
    13         System.out.println("The area of the circle of radius " + circle3.radius + " is " + circle3.getArea());
    14         
    15         circle2.radius = 100;
    16         System.out.println("The area of the circle of radius " + circle2.radius + " is " + circle2.getArea());
    17         circle2.setRadius(10);
    18         System.out.println("The area of the circle of radius " + circle2.radius + " is " + circle2.getArea());
    19         
    20         SimpleCircle circle4 = new SimpleCircle(10);
    21         System.out.println("The area of the circle of radius " + circle4.radius + " is " + circle4.getPerimeter());
    22         
    23         circle2.radius = 10;
    24         System.out.println("The area of the circle of radius " + circle2.radius + " is " + circle2.getPerimeter());
    25         System.out.println(circle2.getPerimeter());
    26         
    27         double area=circle1.getArea();
    28         System.out.println(area);
    29         
    30         
    31         
    32     }
    33 }
    34 class SimpleCircle {
    35     double radius;
    36     SimpleCircle(){
    37         radius = 1;
    38     }
    39     SimpleCircle(double newRadius){
    40         radius = newRadius;
    41     }
    42     double getArea() {
    43         return radius*radius*Math.PI;
    44     }
    45     double getPerimeter() {
    46         return 2*radius*Math.PI;
    47     }
    48     void setRadius(double newRadius) {
    49         radius = newRadius;
    50     }
    51 }



     1 package com.baidu;
     2 
     3 public class Tv {
     4     public static void main(String[] args) {
     5     //  TV tv1=new TV();
     6     //  tv1.turnOff();
     7     //  tv1.setChannel(30);
     8     //  tv1.setVolumeLevel(3);
     9       
    10       Tv tv2=new Tv();
    11       tv2.turnOn();
    12       System.out.println("TV2's channel is "+tv2.channel+" and volume is "+tv2.volumeLevel);
    13       tv2.channelUp();
    14       System.out.println("TV2's channel is "+tv2.channel+" and volume is "+tv2.volumeLevel);
    15       tv2.channelUp();
    16       System.out.println("TV2's channel is "+tv2.channel

    +" and volume is "+tv2.volumeLevel);
    17       tv2.channelUp();
    18       System.out.println("TV2's channel is "+tv2.channel+" and volume is "+tv2.volumeLevel);
    19       tv2.volumeUp();
    20       System.out.println("TV2's channel is "+tv2.channel+" and volume is "+tv2.volumeLevel);
    21       tv2.volumeUp();
    22       System.out.println("TV2's channel is "+tv2.channel+" and volume is "+tv2.volumeLevel);
    23       tv2.volumeUp();
    24       System.out.println("TV2's channel is "+tv2.channel+" and volume is "+tv2.volumeLevel);
    25       
    26       
    27     }
    28 
    29     public int channel=1;
    30     public int volumeLevel=1;
    31     public boolean on=false;
    32     
    33     public Tv() {
    34         
    35     }
    36     public void turnOn() {
    37         on =true;
    38         System.out.println("电视机已经打开了。");
    39     }
    40     public void turnOff() {
    41         on=false;
    42         System.out.println("电视机已经关闭了。");
    43     }
    44     public int getChannel() {
    45         return channel;
    46     }
    47     public void setChannel(int channel) {
    48         if(on) {
    49             System.out.println("电视机已开,可以开始调台了。");
    50             if(channel>=1&&channel<=120) {
    51                 this.channel = channel;
    52                 System.out.println("频道已经调到 "+channel+" 台");
    53             }else {
    54                 System.out.println("你要调的频道不存在。");
    55             }
    56         }else {
    57             System.out.println("电视机关着的时候是不能调台的");
    58         }
    59     }
    60     public int getVolumeLevel() {
    61         return volumeLevel;
    62     }
    63     public void setVolumeLevel(int volumeLevel) {
    64         if(on) {
    65             System.out.println("电视机已开,声音大小可调了");
    66             if(volumeLevel>=1&&volumeLevel<=7) {
    67                 this.volumeLevel = volumeLevel;
    68                 System.out.println("声音的大小设置成了 "+volumeLevel+" 大小");
    69             }
    70         }else {
    71             System.out.println("电视机关着的时候是不能调声音的");
    72         }
    73         
    74     }
    75     public void channelUp() {
    76         if(on&&channel<120) {
    77             channel++;
    78         }
    79     }
    80     public void channelDown() {
    81         if(on&&channel>1) {
    82             channel--;
    83         }
    84     }
    85     public void volumeUp() {
    86         if(on&&volumeLevel<7) {
    87             volumeLevel++;
    88         }
    89     }
    90     public void volumeDown() {
    91         if(on&&volumeLevel>1) {
    92             volumeLevel--;
    93         }
    94     }
    95  }
    96     


     1 package dengniu;
     2 public class Dp {
     3     public static void main(String args[]) {
     4         Person per1 = new Person("张三",30);
     5         Person per2 = new Person("张三",30);    
     6         if(per1.getName().equals(per2.getName())&&per1.getAge()==per2.getAge()) {
     7             System.out.println("是同一个人!");
     8         }
     9     }
    10 }
    11 
    12         class Person {
    13             private String name;
    14             private int age;
    15             public Person(String name,int age) {
    16                 this.name = name;
    17                 this.age = age;
    18             }
    19         
    20         
    21             
    22             public boolean compare(Person per) {
    23                 if(this.name.equals(per.name)&&this.age==per.age) {
    24                     return true;
    25                 }else {
    26                         return false;
    27                 }
    28             }
    29             
    30 //        public void fun(Person temp) {
    31 //            temp.name="李武";
    32 //            temp.age=45;
    33 //        }
    34 //    
    35         public String getName() {
    36             return this.name;
    37         }
    38 
    39         public int getAge() {
    40             return this.age;
    41         }
    42     }
    43 
    44         
    45 
    46         
    47     
    48     
    49 
    50     


     1 package dengniu;
     2 
     3 public class DtaticDemo {
     4 
     5     public static void main(String[] args) {
     6         new DtaticDemo().fun();
     7     }
     8     public static void fun() {
     9         System.out.println("hellow every day!");
    10 
    11     }
    12 
    13 }

    This moment will nap, you will have a dream; but this moment study, you will interpret a dream.
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  • 原文地址:https://www.cnblogs.com/mawenqi-barry/p/7811753.html
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