[Java知识库]Java实验大作业——图形类

目录

一、实验目的

二、实验内容

三、程序清单

I.Abstract包

Point类（其实并没有用上）

II.FileOperate包

ReadFile接口

WriteFile接口

III.Geometry包

Objects类（图形父类）

Circle类

Triangle类

Rectangle类

IV.WindowDraw包

MainWindow类

CirWindow类

TriWindow类

RecWindow类

ReadWindow类

SaveWindow类

SaveSuccess类

V.Action类（主函数所在）

四、程序测试

一、实验目的

通过图形类实验体现继承封装和多态，类之间的关系，并应用高级特征（包括接口、抽象类、包等）、输入输出流、异常处理、窗口、事件等。

二、实验内容

编写并调试程序，实现构造圆形、三角形、矩形类。每一个类都单独用一个文件存放。

圆形类：包括圆心、半径、周长、面积。

三角形类：包括三边、周长、面积。

矩形类：包括长、宽、周长、面积。

根据输入求图形的周长、面积。

实现文件的输入输出流，将求得的图形周长与面积保存在文件中，在适当时机可以读取。

实现容错处理，检测任何不合规的输入，并给出必要提示。

优化交互界面，让非专业者（陌生人）也能顺利完成运算。

三、程序清单

I.Abstract包

1. Point类（其实并没有用上）

package Abstract;

import java.io.Serializable;

public class Point implements Serializable {
    private int x;//x坐标
    private int y;//y坐标

    public int getX() {
        return x;
    }

    public void setX(int x) {
        this.x = x;
    }

    public int getY() {
        return y;
    }

    public void setY(int y) {
        this.y = y;
    }
}

II.FileOperate包

1. ReadFile接口

   package FileOperate;
   
   import Geometry.Objects;
   
   public interface ReadFile {
       Objects readFile(String ads);
   }
   

2. WriteFile接口

   package FileOperate;
   
   import Geometry.Objects;
   
   public interface WriteFile {
       void writeFile(Objects obj, String ads);
   }
   

III.Geometry包

1. Objects类（图形父类）

   package Geometry;
   
   import Abstract.Point;
   
   import java.io.Serializable;
   
   public abstract class Objects implements Serializable {
       private String name;//图形名称
       static double PI = Math.PI;
       private Point O = new Point();//几何图形中心
       double peri;//图形周长
       double area;//图形面积
   
       public Point getO() {
           return O;
       }
   
       public void setO(Point o) {
           O = o;
       }
   
       public double getPeri() {
           return peri;
       }
   
       public double getArea() {
           return area;
       }
   
       public String getName() {
           return name;
       }
   
       public void setName(String name) {
           this.name = name;
       }
   }
   

2. Circle类

   package Geometry;
   
   
   public class Circle extends Objects {
       private int r;//圆的半径
   
       public Circle(){
           setName("圆形");
       }
       public Circle(int r){
           setName("圆形");
           this.r = r;
           peri = PI*r*2;
           area = PI*r*r;
       }
   
       @Override
       public double getPeri() {
           return peri;
       }
   
       @Override
       public double getArea() {
           return area;
       }
   
       public double getR() {
           return r;
       }
   
       public void setR(int r) {
           this.r = r;
       }
   }
   

3. Triangle类

   package Geometry;
   
   import Abstract.Point;
   
   public class Triangle extends Objects {
       private Point A = new Point();
       private Point B = new Point();
       private Point C = new Point();
   
       private int a;
       private int b;
       private int c;
   
       public Triangle(){
           setName("三角形");
       }
       public Triangle(int a,int b,int c){
           setName("三角形");
           this.a = a;
           this.b = b;
           this.c = c;
           peri = a+b+c;
           double p = peri / 2;
           area = Math.sqrt(p *(p -a)*(p -b)*(p -c));
       }
   
       @Override
       public double getPeri() {
           return peri;
       }
   
       @Override
       public double getArea() {
           return area;
       }
   }
   

4. Rectangle类

   package Geometry;
   
   import Abstract.Point;
   
   
   public class Rectangle extends Objects {
       private Point A = new Point();
       private Point B = new Point();
       private Point C = new Point();
       private Point D = new Point();
   
       private int length;
       private int width;
   
   
       public Rectangle(){
           setName("矩形");
       }
       public Rectangle(int length,int width){
           setName("矩形");
           this.length = length;
           this.width = width;
           peri = length*2+width*2;
           area = length*width;
       }
       @Override
       public double getPeri() {
           return peri;
       }
   
       @Override
       public double getArea() {
           return area;
       }
   
       public int getLength() {
           return length;
       }
   
       public void setLength(int length) {
           this.length = length;
       }
   
       public int getWidth() {
           return width;
       }
   
       public void setWidth(int width) {
           this.width = width;
       }
   }
   

IV.WindowDraw包

1. MainWindow类

   package WindowDraw;
   
   import FileOperate.ReadFile;
   import Geometry.Objects;
   
   import javax.swing.*;
   import java.awt.*;
   import java.awt.event.ActionEvent;
   import java.awt.event.ActionListener;
   import java.io.File;
   import java.io.FileInputStream;
   import java.io.IOException;
   import java.io.ObjectInputStream;
   
   public class MainWindow extends JFrame implements ReadFile {
       //判断文件是否存在，存在为1，不存在为0
       public static int state = 1;
       JLabel s,p,rem;
       TextField ad;
       JButton cir, tri, rec, read;
       public MainWindow(){
           setVisible(true);//设置窗口是否可见
           setTitle("几何图形");//设置窗口标题
           setLocationRelativeTo(null);//使窗口居中
           setBounds(100,100,800,600);
           setDefaultCloseOperation(EXIT_ON_CLOSE);//关闭窗口的方法（点击右上角叉号关闭程序）
           setLayout(null);
           init();
       }
   
       void init(){
           s = new JLabel("请选择想要构造的图形：");
           setStyle(s,1,1,800,70,70);
           cir = new JButton("圆形");
           setStyle(cir,150,120,120,50,25);
           tri = new JButton("三角形");
           setStyle(tri,350,120,120,50,25);
           rec = new JButton("矩形");
           setStyle(rec,550,120,120,50,25);
           p = new JLabel("或输入想要读取的文件名：");
           setStyle(p,20,250,800,70,60);
           read = new JButton("确定");
           setStyle(read,340,450,120,50,25);
   
           rem = new JLabel("文件不存在，请重新输入！");
           rem.setForeground(Color.white);
           setStyle(rem,270,400,300,50,20);
           ad = new TextField();
           ad.setBounds(250,350,300,30);
           ad.setFont(new Font("宋体",Font.BOLD,20));
           add(ad);
           buttonAction(cir);
           buttonAction(tri);
           buttonAction(rec);
           buttonAction(read);
       }
   
       void buttonAction(JButton b){
           b.addActionListener(new ActionListener() {
               @Override
               public void actionPerformed(ActionEvent e) {
                   if(java.util.Objects.equals(b.getText(), "圆形")) {
                       dispose();
                       CirWindow win = new CirWindow();
                   }
                   else if(java.util.Objects.equals(b.getText(), "三角形")) {
                       dispose();
                       TriWindow win = new TriWindow();
                   }
                   else if(java.util.Objects.equals(b.getText(),"矩形")){
                       dispose();
                       RecWindow win = new RecWindow();
                   }
                   else if(java.util.Objects.equals(b.getText(),"确定")){
                       String addr = ad.getText()+".txt";
                       Objects obj = readFile(addr);
                       if(state==1){
                           ReadWindow win = new ReadWindow(obj);
                           rem.setForeground(Color.white);
                           ad.setText(null);
                       }else {
                           ad.setText(null);
                           rem.setForeground(Color.red);
                           state = 1;
                       }
                   }
               }
           });
       }
   
       void setStyle(JComponent jc,int x,int y,int width,int height,int size){
           jc.setPreferredSize(new Dimension(width,height));
           jc.setBounds(x,y,width,height);
           jc.setFont(new Font("华文行楷", Font.BOLD,size));
           add(jc);
       }
   
       @Override
       public Objects readFile(String ads) {
           File file = new File(ads);
           try{
               FileInputStream fileIn = new FileInputStream(file);
               ObjectInputStream objectIn = new ObjectInputStream(fileIn);
               Objects obj = (Objects) objectIn.readObject();
               objectIn.close();
               return obj;
           } catch (IOException | ClassNotFoundException e) {
               MainWindow.state = 0;
           }
           return null;
       }
   }
   

2. CirWindow类

   package WindowDraw;
   
   import Geometry.Circle;
   
   import javax.swing.*;
   import java.awt.*;
   import java.awt.event.ActionEvent;
   import java.awt.event.ActionListener;
   
   public class CirWindow extends JFrame implements ActionListener {
       JLabel rem;
       TextField r,peri,area;
       JButton act,rtn,save,clear;
       Circle cir;
       public CirWindow(){
           setVisible(true);//设置窗口是否可见
           setTitle("圆形");//设置窗口标题
           setLocationRelativeTo(null);//使窗口居中
           setBounds(100,100,800,600);
           setDefaultCloseOperation(DISPOSE_ON_CLOSE);//关闭窗口的方法
           setLayout(null);
           init();
       }
       void init(){
           setStyle(new JLabel("请输入半径："),150,100,250,30,30);
           r = new TextField();
           r.setBounds(450,100,200,30);
           r.setFont(new Font("宋体",Font.BOLD,20));
           add(r);
   
           setStyle(new JLabel("该圆形周长为："),150,200,250,30,30);
           peri = new TextField();
           setTA(peri,450,200);
           setStyle(new JLabel("该圆形面积为："),150,300,250,30,30);
           area = new TextField();
           setTA(area,450,300);
   
           rem = new JLabel();
           rem.setForeground(Color.red);
           setStyle(rem,470,130,300,50,20);
   
           act = new JButton("确定");
           rtn = new JButton("返回");
           save = new JButton("保存");
           clear = new JButton("清空");
           setStyle(act,120,400,120,50,25);
           setStyle(rtn,270,400,120,50,25);
           setStyle(save,420,400,120,50,25);
           setStyle(clear,570,400,120,50,25);
           act.addActionListener(this);
           rtn.addActionListener(this);
           save.addActionListener(this);
           clear.addActionListener(this);
       }
   
       void setStyle(JComponent jc,int x,int y,int width,int height,int size){
           jc.setPreferredSize(new Dimension(width,height));
           jc.setBounds(x,y,width,height);
           jc.setFont(new Font("华文行楷", Font.BOLD,size));
           add(jc);
       }
       void setTA(TextField tf,int x,int y){
           tf.setBounds(x,y,200,30);
           tf.setFont(new Font("宋体",Font.BOLD,20));
           tf.setEditable(false);
           add(tf);
       }
   
       @Override
       public void actionPerformed(ActionEvent e) {
           if(e.getSource()==act){
               try{
                   cir = new Circle(Integer.parseInt(r.getText()));
                   if(cir.getR()<=0){
                       rem.setText("请输入正整数！");
                       r.setText(null);
                       peri.setText(null);
                       area.setText(null);
                   }
                   else{
                       rem.setText(null);
                       peri.setText(String.valueOf(cir.getPeri()));
                       area.setText(String.valueOf(cir.getArea()));
                       rem.setForeground(Color.white);
                   }
               } catch (NumberFormatException numberFormatException) {
                   rem.setText("请输入正整数！");
                   r.setText(null);
                   peri.setText(null);
                   area.setText(null);
               }
           }
           if(e.getSource()==rtn){
               dispose();
               MainWindow win = new MainWindow();
           }
           if(e.getSource()==clear){
               r.setText(null);
               area.setText(null);
               peri.setText(null);
           }
           if(e.getSource()==save){
               SaveWindow win = new SaveWindow(cir);
           }
       }
   }
   

3. TriWindow类

   package WindowDraw;
   
   import Geometry.Circle;
   import Geometry.Triangle;
   
   import javax.swing.*;
   import java.awt.*;
   import java.awt.event.ActionEvent;
   import java.awt.event.ActionListener;
   
   
   public class TriWindow extends JFrame implements ActionListener {
       JLabel rem;
       TextField a,b,c,peri,area;
       JButton act,rtn,save,clear;
       Triangle tri;
       public TriWindow(){
           setVisible(true);//设置窗口是否可见
           setTitle("三角形");//设置窗口标题
           setLocationRelativeTo(null);//使窗口居中
           setBounds(100,100,800,600);
           setDefaultCloseOperation(DISPOSE_ON_CLOSE);//关闭窗口的方法
           setLayout(null);
           init();
       }
       void init(){
           setStyle(new JLabel("请输入a边长："),150,60,250,30,30);
           a = new TextField();
           a.setBounds(450,60,200,30);
           a.setFont(new Font("宋体",Font.BOLD,20));
           add(a);
           setStyle(new JLabel("请输入b边长："),150,120,250,30,30);
           b = new TextField();
           b.setBounds(450,120,200,30);
           b.setFont(new Font("宋体",Font.BOLD,20));
           add(b);
           setStyle(new JLabel("请输入c边长："),150,180,250,30,30);
           c = new TextField();
           c.setBounds(450,180,200,30);
           c.setFont(new Font("宋体",Font.BOLD,20));
           add(c);
   
           setStyle(new JLabel("该三角形周长为："),150,260,270,30,30);
           peri = new TextField();
           setTA(peri,450,260);
           setStyle(new JLabel("该三角形面积为："),150,320,270,30,30);
           area = new TextField();
           setTA(area,450,320);
   
           rem = new JLabel();
           rem.setForeground(Color.red);
           setStyle(rem,460,210,300,50,20);
   
           act = new JButton("确定");
           rtn = new JButton("返回");
           save = new JButton("保存");
           clear = new JButton("清空");
           setStyle(act,120,400,120,50,25);
           setStyle(rtn,270,400,120,50,25);
           setStyle(save,420,400,120,50,25);
           setStyle(clear,570,400,120,50,25);
           act.addActionListener(this);
           rtn.addActionListener(this);
           save.addActionListener(this);
           clear.addActionListener(this);
       }
   
       void setStyle(JComponent jc,int x,int y,int width,int height,int size){
           jc.setPreferredSize(new Dimension(width,height));
           jc.setBounds(x,y,width,height);
           jc.setFont(new Font("华文行楷", Font.BOLD,size));
           add(jc);
       }
       void setTA(TextField tf,int x,int y){
           tf.setBounds(x,y,200,30);
           tf.setFont(new Font("宋体",Font.BOLD,20));
           tf.setEditable(false);
           add(tf);
       }
   
       @Override
       public void actionPerformed(ActionEvent e) {
           if(e.getSource()==act){
               try{
                   tri = new Triangle(Integer.parseInt(a.getText()),Integer.parseInt(b.getText()),Integer.parseInt(c.getText()));
                   if(Double.isNaN(tri.getArea())||tri.getArea()==0){
                       rem.setText("请输入正确的三角形！");
                       a.setText(null);
                       b.setText(null);
                       c.setText(null);
                       peri.setText(null);
                       area.setText(null);
                   }
                   else{
                       rem.setText(null);
                       peri.setText(String.valueOf(tri.getPeri()));
                       area.setText(String.valueOf(tri.getArea()));
                   }
               } catch (NumberFormatException numberFormatException) {
                   rem.setText("请输入正整数！");
                   a.setText(null);
                   b.setText(null);
                   c.setText(null);
                   peri.setText(null);
                   area.setText(null);
               }
           }
           else if(e.getSource()==rtn){
               dispose();
               MainWindow win = new MainWindow();
           }
           else if(e.getSource()==clear){
               a.setText(null);
               b.setText(null);
               c.setText(null);
               peri.setText(null);
               area.setText(null);
           }
           if(e.getSource()==save){
               SaveWindow win = new SaveWindow(tri);
           }
       }
   }
   

4. RecWindow类

   package WindowDraw;
   
   import Geometry.Rectangle;
   
   import javax.swing.*;
   import java.awt.*;
   import java.awt.event.ActionEvent;
   import java.awt.event.ActionListener;
   
   public class RecWindow extends JFrame implements ActionListener {
       JLabel rem;
       TextField l,w,peri,area;
       JButton act,rtn,save,clear;
       Rectangle rec;
       public RecWindow(){
           setVisible(true);//设置窗口是否可见
           setTitle("矩形");//设置窗口标题
           setLocationRelativeTo(null);//使窗口居中
           setBounds(100,100,800,600);
           setDefaultCloseOperation(DISPOSE_ON_CLOSE);//关闭窗口的方法
           setLayout(null);
           init();
       }
       void init(){
           setStyle(new JLabel("请输入长："),150,60,250,30,30);
           l = new TextField();
           l.setBounds(450,60,200,30);
           l.setFont(new Font("宋体",Font.BOLD,20));
           add(l);
           setStyle(new JLabel("请输入宽："),150,140,250,30,30);
           w = new TextField();
           w.setBounds(450,140,200,30);
           w.setFont(new Font("宋体",Font.BOLD,20));
           add(w);
   
           setStyle(new JLabel("该矩形周长为："),150,220,250,30,30);
           peri = new TextField();
           setTA(peri,450,220);
           setStyle(new JLabel("该矩形面积为："),150,300,250,30,30);
           area = new TextField();
           setTA(area,450,300);
   
           rem = new JLabel();
           rem.setForeground(Color.red);
           setStyle(rem,460,170,300,50,20);
   
           act = new JButton("确定");
           rtn = new JButton("返回");
           save = new JButton("保存");
           clear = new JButton("清空");
           setStyle(act,120,400,120,50,25);
           setStyle(rtn,270,400,120,50,25);
           setStyle(save,420,400,120,50,25);
           setStyle(clear,570,400,120,50,25);
           act.addActionListener(this);
           rtn.addActionListener(this);
           save.addActionListener(this);
           clear.addActionListener(this);
       }
   
       void setStyle(JComponent jc,int x,int y,int width,int height,int size){
           jc.setPreferredSize(new Dimension(width,height));
           jc.setBounds(x,y,width,height);
           jc.setFont(new Font("华文行楷", Font.BOLD,size));
           add(jc);
       }
       void setTA(TextField tf,int x,int y){
           tf.setBounds(x,y,200,30);
           tf.setFont(new Font("宋体",Font.BOLD,20));
           tf.setEditable(false);
           add(tf);
       }
   
       @Override
       public void actionPerformed(ActionEvent e) {
           if(e.getSource()==act){
               try{
                   rec = new Rectangle(Integer.parseInt(l.getText()),Integer.parseInt(w.getText()));
                   if(rec.getLength()<rec.getWidth()){
                       rem.setText("矩形的长不能小于宽！");
                       l.setText(null);
                       w.setText(null);
                       peri.setText(null);
                       area.setText(null);
                   }
                   else if(rec.getLength()<=0||rec.getWidth()<=0){
                       rem.setText("请输入正整数！");
                       l.setText(null);
                       w.setText(null);
                       peri.setText(null);
                       area.setText(null);
                   }
                   else{
                       rem.setText(null);
                       peri.setText(String.valueOf(rec.getPeri()));
                       area.setText(String.valueOf(rec.getArea()));
                   }
               } catch (NumberFormatException numberFormatException) {
                   rem.setText("请输入正整数！");
                   l.setText(null);
                   w.setText(null);
                   peri.setText(null);
                   area.setText(null);
               }
           }
           if(e.getSource()==rtn){
               dispose();
               MainWindow win = new MainWindow();
           }
           if(e.getSource()==clear){
               l.setText(null);
               w.setText(null);
               peri.setText(null);
               area.setText(null);
           }
           if(e.getSource()==save&&l.getText()!=null&&w.getText()!=null){
               SaveWindow win = new SaveWindow(rec);
           }
       }
   }
   

5. ReadWindow类

   package WindowDraw;
   
   import Geometry.*;
   import javax.swing.*;
   import java.awt.*;
   
   public class ReadWindow extends JFrame {
       Objects obj;
       JLabel s,pp,aa;
       TextField peri,area;
       public ReadWindow(Objects obj){
           this.obj = obj;
           setVisible(true);//设置窗口是否可见
           setTitle("读取图形");//设置窗口标题
           setLocationRelativeTo(null);//使窗口居中
           setBounds(100,100,400,400);
           setDefaultCloseOperation(DISPOSE_ON_CLOSE);//关闭窗口的方法
           setLayout(null);
           init();
       }
       void init(){
           s = new JLabel("该图形为"+obj.getName());
           setStyle(s,1,1,400,30,30);
           pp = new JLabel("周长为：");
           setStyle(pp,1,100,150,30,30);
           aa = new JLabel("面积为：");
           setStyle(aa,1,200,150,30,30);
   
           peri = new TextField();
           area = new TextField();
           setTA(peri,160,100,obj.getPeri());
           setTA(area,160,200,obj.getArea());
       }
   
       void setStyle(JComponent jc,int x,int y,int width,int height,int size){
           jc.setPreferredSize(new Dimension(width,height));
           jc.setBounds(x,y,width,height);
           jc.setFont(new Font("华文行楷", Font.BOLD,size));
           add(jc);
       }
   
       void setTA(TextField tf,int x,int y,double info){
           tf.setBounds(x,y,200,30);
           tf.setFont(new Font("宋体",Font.BOLD,20));
           tf.setText(String.valueOf(info));
           tf.setEditable(false);
           add(tf);
       }
   }
   

6. SaveWindow类

   package WindowDraw;
   
   import FileOperate.WriteFile;
   import Geometry.Objects;
   
   import javax.swing.*;
   import java.awt.*;
   import java.awt.event.ActionEvent;
   import java.awt.event.ActionListener;
   import java.io.File;
   import java.io.FileOutputStream;
   import java.io.IOException;
   import java.io.ObjectOutputStream;
   
   public class SaveWindow extends JFrame implements ActionListener, WriteFile {
       TextField ad;
       JButton save,cancel;
       Objects obj;
       public SaveWindow(Objects obj){
           this.obj = obj;
           setVisible(true);//设置窗口是否可见
           setTitle("");//设置窗口标题
           setLocationRelativeTo(null);//使窗口居中
           setBounds(100,100,400,400);
           setDefaultCloseOperation(DISPOSE_ON_CLOSE);//关闭窗口的方法
           setLayout(null);
           init();
       }
       void init(){
           setStyle(new JLabel("请输入保存地址："),50,100,300,30,30);
           ad = new TextField();
           setTA(ad,100,170);
   
           save = new JButton("保存");
           cancel = new JButton("取消");
           setStyle(save,70,250,120,50,25);
           setStyle(cancel,200,250,120,50,25);
   
           save.addActionListener(this);
           cancel.addActionListener(this);
       }
   
       @Override
       public void actionPerformed(ActionEvent e) {
           if(e.getSource()==save){
               try{
                   String addr = ad.getText()+".txt";
                   writeFile(obj,addr);
               } catch (Exception exception) {
                   ad.setText("请输入正确的地址");
               }
               SaveSuccess win = new SaveSuccess();
               dispose();
           }
           else if(e.getSource()==cancel){
               dispose();
           }
       }
   
       void setStyle(JComponent jc,int x,int y,int width,int height,int size){
           jc.setPreferredSize(new Dimension(width,height));
           jc.setBounds(x,y,width,height);
           jc.setFont(new Font("华文行楷", Font.BOLD,size));
           add(jc);
       }
       void setTA(TextField tf,int x,int y){
           tf.setBounds(x,y,200,30);
           tf.setFont(new Font("宋体",Font.BOLD,20));
           add(tf);
       }
   
       @Override
       public void writeFile(Objects obj, String ads) {
           File file = new File(ads);
           try{
               FileOutputStream fileOut = new FileOutputStream(file);
               ObjectOutputStream objectOut = new ObjectOutputStream(fileOut);
               objectOut.writeObject(obj);
               objectOut.close();
           } catch (IOException e) {
               System.out.println("请输入正确的地址");
           }
       }
   }
   

7. SaveSuccess类

   package WindowDraw;
   
   import javax.swing.*;
   import java.awt.*;
   import java.awt.event.ActionEvent;
   import java.awt.event.ActionListener;
   import java.util.Objects;
   
   public class SaveSuccess extends JFrame {
       JButton goon;
       public SaveSuccess(){
           setVisible(true);//设置窗口是否可见
           setTitle("保存图形");//设置窗口标题
           setLocationRelativeTo(null);//使窗口居中
           setBounds(100,100,300,300);
           setDefaultCloseOperation(DISPOSE_ON_CLOSE);//关闭窗口的方法
           setLayout(null);
           init();
       }
       void init(){
           setStyle(new JLabel("保存成功！"),80,90,200,30,30);
           goon = new JButton("确定");
           setStyle(goon,90,170,120,50,25);
           buttonAction(goon);
       }
       void buttonAction(JButton b){
           b.addActionListener(new ActionListener() {
               @Override
               public void actionPerformed(ActionEvent e) {
                   if(Objects.equals(b.getText(), "确定")) {
                       dispose();
                   }
               }
           });
       }
   
       void setStyle(JComponent jc,int x,int y,int width,int height,int size){
           jc.setPreferredSize(new Dimension(width,height));
           jc.setBounds(x,y,width,height);
           jc.setFont(new Font("华文行楷", Font.BOLD,size));
           add(jc);
       }
   }
   

V.Action类（主函数所在）

import WindowDraw.MainWindow;

public class Action {
    public static void main(String[] args) {
        MainWindow win = new MainWindow();
    }
}

四、程序测试

程序功能实现截图如下