Java實驗報告-5-彈球程序

Java實驗報告實驗題目實驗五多線程彈球程序源代碼importjava.awt.Color;importjava.awt.FlowLayout;importjava.awt.Graphics;importjava.awt.Toolkit;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjavax.swing.*;publicclassBall{ publicstaticvoidmain(String[]args){ //TODO自動生成的方法存根 showfm=newshow(); fm.setVisible(true); }}classshowextendsJFrame{ publicshow(){ setTitle("ball"); setSize(600,500); showballfm=newshowball(); add(fm); }}classshowballextendsJPanel{ publicint[][]a=newint[100][5]; intlen=420,vry=1; publicshowball(){ for(inti=0;i<100;i++){ a[i][0]=150; a[i][1]=10; a[i][2]=3; a[i][3]=3; a[i][4]=0; } Timertimer=newTimer(15,newMyListener(""));//1000毫秒觸發(fā)一次 timer.start(); JButtonstart=newJButton("開始"); JButtonstop=newJButton("結(jié)束"); setLayout(null); start.setBounds(100,400,80,40); stop.setBounds(200,400,80,40); start.addActionListener(newMyListener("begin")); stop.addActionListener(newMyListener("stop")); add(start); add(stop); } publicvoidpaintComponent(Graphicsg){ super.paintComponent(g); g.drawString(""+vry,500,500); g.drawLine(10,10,len,10); g.drawLine(10,10,10,len-100); g.drawLine(10,len-100,len,len-100); g.drawLine(len,10,len,len-100); intpp=0; for(inti=0;i<vry;i++){ a[i][0]+=a[i][2]; a[i][1]+=a[i][3]; if(a[i][0]>(len-20)||a[i][0]<10){ a[i][2]=-a[i][2]; a[i][4]++; } if(a[i][1]>(len-120)||a[i][1]<10){ a[i][3]=-a[i][3]; a[i][4]++; } if(a[i][4]>7){ pp=1; } g.setColor(Color.BLUE); g.fillOval(a[i][0],a[i][1],30,30); } if(pp==1){ for(inti=0;i<vry-1;i++){ a[i][0]=a[i+1][0]; a[i][1]=a[i+1][1]; a[i][2]=a[i+1][2]; a[i][3]=a[i+1][3]; a[i][4]=a[i+1][4]; } vry--; a[vry][0]=150; a[vry][1]=10; a[vry][2]=3; a[vry][3]=3; a[vry][4]=0; } } classMyListenerimplementsActionListener { Stringstr; publicMyListener(Stringst){ this.str=st; } publicvoidactionPerformed(ActionEventevent) { if(str.equals("begin")){ vry++; }