init

public void init(){
jPanel =new JPanel();
main=new JScrollPane();
this.getContentPane().add(main);
main.setViewportView(jPanel);
jScrollPane = new JScrollPane();
jPanel.setLayout(null);
root = new DefaultMutableTreeNode("所有表");
tree =new JTree(root);
submit = new JButton("确定");
build =new JButton("生成");
textArea = new JTextArea();
textArea.setAutoscrolls(true);
Border border=BorderFactory.createLineBorder(new Color(127,157,185),1);
textArea.setBorder(border);
addTree(jScrollPane,tree,root);


main_table =new JLabel("选择主表");
choose=new JLabel("附表个数");

select=new JComboBox();
jTree_select=new ArrayList();
for(int i=0;i<=5;i++){
select.addItem(i);
}

jPanel.add(main_table);
jPanel.add(choose);
jPanel.add(select);
jPanel.add(submit);
// jPanel.add(build);
jPanel.add(textArea);


this.addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e) {

System.exit(1);
}

});
select.addItemListener(this);
submit.addActionListener(this);
}