java编程实现图形界面 java图形界面编程教程

java 图形界面编程问题 package Test1；import java.awt.*；import javax.swing.*；class Jie5 extends JFrame {JPanel contentPane，northPanel，southPanel；JTextField jtf1，jtf2；JButton jb[]；public Jie5(){contentPane=new JPanel()；northPanel=new JPanel()；southPanel=new JPanel()；jtf1=new JTextField()；jtf2=new JTextField()；jb=new JButton[10]；this.setContentPane(contentPane)；contentPane.setLayout(new BorderLayout(4，4))；contentPane.add(northPanel，BorderLayout.NORTH)；northPanel.setLayout(new GridLayout(3，3，4，4))；for(int i=0；i；i+){jb[i]=new JButton(\"\"+(i+1))；northPanel.add(jb[i])；}contentPane.add(southPanel，BorderLayout.SOUTH)；southPanel.setLayout(new GridLayout(1，2，4，4))；southPanel.add(jtf1)；jtf1.setColumns(10)；southPanel.add(jtf2)；jtf2.setColumns(10)；this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)；this.setBounds(30，30，400，400)；this.setTitle(\"hello\")；}}public class Demo5 {param argspublic static void main(String[]args){try {TODO Auto-generated method stubUIManagersetLookAndFeel(。java图形用户界面编程 import java.applet.Applet；import java.awt.Graphics；public class MyApplet extends Applet {private static final long serialVersionUID=-3514248401804395713L；public MyApplet(){super()；}public void init(){setSize(320，300)；}public void paint(Graphics g){super.paint(g)；int number=5；int r=50；int padd=30；int[][]arys=printCircle(number)；for(int i=0；i；i+){for(int j=0；j；j+){g.drawString(\"\"+arys[i][j]，padd+j*r，padd+i*r)；System.out.print(arys[i][j]+\"\\t\")；}System.out.println()；}}private int[][]printCircle(int number){int[][]ary=new int[number][number]；int rightLen；int downLen；int leftLen；int upLen；int rightRow=0；int rightCol=0；int leftRow=number-1；int leftCol=number-1；int downRow=1；int downCol=number-1；int upRow=number-2；int upCol=0；int digit=1；while(number>；0){rightLen=number；downLen=number-1；leftLen=number-1；upLen=number-2；for(int i=0，temp=rightCol；i；i+){ary[rightRow][temp+]=digit+；}for(int j=0，temp=downRow；j；j+){ary[temp+][downCol]=digit+；}for(int m=0，temp=leftCol-1；m；m+){ary。java里边图形界面编程 add(a1，BorderLayout.EAST)；this；东\")；JButton a2=new JButton(\".setSize(500修改成这样：import java.awt.*；import javax，400).NORTH)；this.setDefaultCloseOperation(JFrame.add(a5，BorderLayout.CENTER)；this，BorderLayout；中\")；this；public class test2 extends JFrame{public static void main(String[]args){test2 a=new test2()；}public test2(){JButton a1=new JButton(\".*；this.add(a4.add(a3，BorderLayout.SOUTH)；this.setLocation(800，600)；this；北\")；JButton a5=new JButton(\"南\")；JButton a4=new JButton(\"西\")；JButton a3=new JButton(\".setTitle(\"边界布局BorderLayout\")；this.EXIT_ON_CLOSE)；this.swing.add(a2，BorderLayout.WEST)；thisJava中怎么样进行图形界面编程？ 用NetBeans做，可以直接拖放，不用自己布局，但是效率不怎么好

#event#图形界面