java语言第二次补充3习题集其他xtjd

1、5Javaswing【1swing 组件，改写【例4-4】的 5Javaswing【1swing 组件，改写【例4-4】的 importjavax.swing.*; import java.awt.*;importpublicclassXitiDaan5_1extendsJFrameimplement JLabel jl;JPanel jp; TextField t1; JButton jb;验证Container con=getContentPane(); con.setLayout(newBorderLayout(); jp=new JPanel();jl=new JLabel(请输入t1

2、=new TextField(25); jt2=new JTextField(25); jb=newJButton(确定); publicvoidactionPerformed(ActionEvent););public sicvoidmain(Stringargs) new XitiDaan5_1();5.1【2解答import javax.swing.*; import java.awt.*; importjava.awt.event.*; publicsuper(班StringcolumnNames=Objectdata5.1【2解答import javax.swing.*; impor

3、t java.awt.*; importjava.awt.event.*; publicsuper(班StringcolumnNames=Objectdata=,班级,固,地址三,男四,男五,男也,女名,男涛,男萍,女,男,男,男,南安,福州,厦门,漳州,龙岩美,女,莆田JTabletable=newtable.setPreferredScrollableViewportSize(new JScrollPane美,女,莆田JTabletable=newtable.setPreferredScrollableViewportSize(new JScrollPanescrollPane=newge

4、tContentPane().add(scrollPane,BorderLayo publicvoidwindowClosing(WindowEvente) /publicclasspublicicvoidmain(StringTongxunlu_Tableframe=new5.2【35-11 /*TreeNode构造动态树;=;=;=;=if(currentSelection!=MutableTreeNode=parentNode=if(currentSelection!=MutableTreeNode=parentNode=parent, ObjectchildNode= =o(child

5、Node,parent,node = =node = +o(childNode,parent,node = =node = + publicclassXitiDaan5_3extendsJFrameimplements JButton jb1,jb2;JPanel/JPanel MAND=添加MAND=移除XitiDaan5_3(Strings) treePanel=newjb1=newJButton(添加); /jp1=newJPanel(); jp2=new JPanel();Container con=getContentPane(); con.setLayout(newBorderLa

6、yout();/*DefaultMutableTreeNoderoot=newDefaultMutableTreeNode(c:);/DefaultMutableTreeNode t1=new DefaultMutableTreeNode(备份资料);/节点DefaultMutableTreeNode t2=new DefaultMutableTreeNode(Java 学习);/节点DefaultMutableTreeNode t1_1=new DefaultMutableTreeNode(思精华帖子DefaultMutableTreeNode t1_2=new DefaultMutable

7、TreeNode(来往邮件DefaultMutableTreeNode t2_1=new DefaultMutableTreeNode t2=new DefaultMutableTreeNode(Java 学习);/节点DefaultMutableTreeNode t1_1=new DefaultMutableTreeNode(思精华帖子DefaultMutableTreeNode t1_2=new DefaultMutableTreeNode(来往邮件DefaultMutableTreeNode t2_1=new DefaultMutableTreeNodet2_2=newDefaultMutableTreeNode(Java3D); t1.add(t1_1);t1.add(t1_2);/t1_1,t1_2t1的子节点。 t2.add(t2_1);t2.add(t2_2);/t2_1,t2_2t2的子节点。 JTree tree =new JTree(root); /创建root 的树。 JScrollPane scrollpane=new JScrollPane(tree); void