weixin_58234741的博客

定义界面 USB，其中包含抽象方法打开和关闭。定义类麦克风、键盘、鼠标实现 USB 接口。 定义类计算机。计算机包含专用 USB [] USB。计算机包含三种公共方法：空隙添加（USB USB）：无效电源（）：无效电源关闭（）。在主要方法中，新计算机模拟电源和电源关闭。结果如下： package experience6; public class experience6__USB { public static void main(String[] args) { computer ...

定义抽象类形状。形状包含专用字符串颜色。形状包含抽象方法：Shape(), public Shape(String s) 、public double getArea() 、double getVolume()、ToString（）、定义圆从形状继承。圆包含私有数据双 x，y 作为中心位置，双半径。圆圈覆盖形状中的所有抽象方法。定义圆锥体从圆圈继承。锥包含双高的私人数据。锥体从圆继承的方法。 package experience6; import java.util.*; public class .

package experience5; import java.util.*; public class Account { private int id; private double balance; private double annualInterestRate; private Date dateCreated; public Account(){ this(0,0,0); dateCreated = new Date(); } public Accou...

package experience5; import java.util.*; public class Triangle extends GeoObject{ private double side1; private double side2; private double side3; public Triangle(){ side1=side2=side3=1; } public Triangle(double side1,double side2,double side...

package experience3; import java.util.*; public class part3 { public static void main(String[] args) { Scanner input=new Scanner(System.in); char[]c1= {'a','b','v'}; int k=123; MyString1 c=new MyString1(c1); System.out.print...

package experience3; //该代码中所应用的位置类是引用于上篇博客的位置类 public class part2 { public static void main(String[] args) { Triangle2D t1=new Triangle2D(new MyPoint(2.5,2),new MyPoint(4.2,3),new MyPoint(5,3.5)); System.out.println(t1.getArea(...

package experience3; public class part1 { public static void main(String[] args) { MyPoint c1=new MyPoint(); MyPoint c2=new MyPoint(10,30.5); System.out.println("("+c1.getnumx()+" , "+c1.getnumy()+")"); System.out.println( MyPoint.d...

package experce2; import java.util.*; public class thethird { public static void main(String[] args) { Random g1=new Random(1000); int i1=0; for(int i=0;i<50;i++) { System.out.print(" "+g1.nextInt(100)+" "); ...

package experce2; public class thesecound { public static void main(String[] args) { Stock a=new Stock("ORCL","Oraclecorporation"); a.number1(34.5); a.number2(34.35); System.out.println(a.currenPrice+" "+a.preciousClosingPrice); ...

package experce2; public class thefirst { public static void main(String[] args) { Rectangle a1= new Rectangle(4,40); Rectangle a2= new Rectangle(3.5,35.9); System.out.println(a1.height+" "+a1.width+" "+a1.getArea()+" "+a1.getPerime...

package chapter1; import java.util.*; public class sort { public static void main(String[] args) { System.out.println("please input a string and we will sort them."); Scanner input=new Scanner(System.in); String a=input.nextLine(); S...

package chapter1; import java.util.*; public class ave { public static void main(String[] args) { int i; double i1; double []a=new double[10]; Scanner input=new Scanner(System.in); System.out.println("please input ten numbers:")...