mainframe.java

书籍管理系统

/**********************************
 * FileName:MainFrame.java
 * Function:功能主界面
 * Time:2005 1.8
 *********************************/


import java.awt.*;
import java.awt.event.*;



public class MainFrame extends Frame implements ActionListener
{
	Button butQuery = new Button("图书查询");
	Button butBorrow = new Button("图书借阅");
	Button butReturn = new Button("图书归还");
	Button butInform  =new Button("读者资料查询");
	Button butHelp = new Button("帮助");
    Button butExit = new Button("退出");
	
	
	MainFrame()
	{
		    setTitle("图书管理系统");
			GridBagLayout gbLayout = new GridBagLayout();
			GridBagConstraints gbc = new GridBagConstraints ();
			setLayout(gbLayout);
			
			gbc.gridx=2;gbc.gridy =2;
			gbc.gridwidth =1;gbc.gridheight =1;
			gbc.fill=GridBagConstraints.BOTH ;
			gbc.anchor =GridBagConstraints.WEST;
			gbc.weightx  = 1;  gbc.weighty = 1;
			gbc.insets = new Insets (2,5,1,5);
			gbLayout.setConstraints (butQuery,gbc);
			butQuery.addActionListener(this);
			
			gbc.gridx=6;gbc.gridy =2;
			gbc.gridwidth =1;gbc.gridheight =1;
			gbc.fill=GridBagConstraints.BOTH ;
			gbc.anchor =GridBagConstraints.WEST ;
			gbc.weightx  = 1;  gbc.weighty = 1;
			gbc.insets = new Insets (2,5,1,5);
			gbLayout.setConstraints (butBorrow,gbc);
			butBorrow.addActionListener(this);
			
			gbc.gridx=2;gbc.gridy =17;
			gbc.gridwidth =1;gbc.gridheight =1;
			gbc.fill=GridBagConstraints.BOTH ;
			gbc.anchor =GridBagConstraints.WEST;
			gbc.weightx  = 1;  gbc.weighty = 1;
			gbc.insets = new Insets (2,5,1,5);
			gbLayout.setConstraints (butReturn,gbc);
			butReturn.addActionListener(this);
			
			gbc.gridx=6;gbc.gridy =17;
			gbc.gridwidth =1;gbc.gridheight =1;
			gbc.fill=GridBagConstraints.BOTH ;
			gbc.anchor =GridBagConstraints.WEST;
			gbc.weightx  = 1;  gbc.weighty = 1;
			gbc.insets = new Insets (2,5,1,5);
			gbLayout.setConstraints (butInform,gbc);
			butInform.addActionListener(this);
			
			gbc.gridx=2;gbc.gridy =32;
			gbc.gridwidth =1;gbc.gridheight =1;
			gbc.fill=GridBagConstraints.BOTH  ;
			gbc.anchor =GridBagConstraints.WEST;
			gbc.weightx  = 1;  gbc.weighty = 1;
			gbc.insets = new Insets (2,5,1,5);
			gbLayout.setConstraints (butHelp,gbc);
			butHelp.addActionListener(this);
			
			gbc.gridx=6;gbc.gridy =32;
			gbc.gridwidth =1;gbc.gridheight =1;
			gbc.fill=GridBagConstraints.BOTH ;
			gbc.anchor =GridBagConstraints.WEST;
			gbc.weightx  = 1;  gbc.weighty = 1;
			gbc.insets = new Insets (2,5,1,5);
			gbLayout.setConstraints (butExit,gbc);
			butExit.addActionListener(this);
			
			add(butQuery);
			add(butBorrow);
			add(butReturn);
			add(butInform);
			add(butHelp);
			add(butExit);
			setSize(400,500);
			setResizable(false); 
			setVisible(true);
			setLocation (350,150);
		    addWindowListener(new WindowAdapter() 
      	    {
        	   public void windowClosing(WindowEvent e) 
			   {
				   System.exit(0);
        	    }
      	    });
      }
	
	
	public void actionPerformed(ActionEvent e)
	{
		 
		 if(e.getActionCommand () == "图书查询")
		{
			 BookQueryFrame bqFrame = new BookQueryFrame ();
			 bqFrame.show ();
		 }
		 if(e.getActionCommand () == "图书借阅")
		{
			 BookBorrowFrame bbFrame = new BookBorrowFrame ();
			 bbFrame.show ();
		 }
		 if(e.getActionCommand () == "图书归还")
		{
			 BookReturnFrame brFrame = new BookReturnFrame ();
			 brFrame.show();
		 }
		 if(e.getActionCommand () == "读者资料查询")
		{
			UserQueryFrame uqFrame = new UserQueryFrame ();
			uqFrame.show ();
		 }
		 if(e.getActionCommand ()== "帮助")
		 {
			 HelpFrame  hFrame = new HelpFrame ();
			 hFrame.show ();
			 hFrame.txtDisplay();
		 }
		 
		 if(e.getActionCommand () =="退出")
		    dispose(); 
	}
	
	
}