help.java

可以用的成绩管理系统

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import java.lang.*;
public class Help extends JFrame implements ActionListener
{
	private static final int DEFAULT_WIDTH = 300;
    private static final int DEFAULT_HEIFHT = 300;  
    GridBagLayout gbl=new GridBagLayout();
    GridBagConstraints gbc=new GridBagConstraints();
	JPanel panel;
	JLabel label,lab,la;
	JButton bt;
	
	public Help()
	{
		super.setTitle("欢迎光临学生成绩管理系统!");
		super.setSize(DEFAULT_WIDTH,DEFAULT_HEIFHT);
		panel=new JPanel();
		label=new JLabel("如果有任何问题，请资讯，联系方式如下：");
		lab=new JLabel("电话:[phone]");
		la=new JLabel("   ");
		bt=new JButton("返回");
		bt.addActionListener(this);
		set(0,0,1,1,label);
		set(0,1,1,1,lab);
		set(0,3,1,1,la);
		set(0,4,1,1,bt);
		setLayout(gbl);
		setLocation(300,80);
	}
	public void set(int x,int y,int w,int h,Component com) //布局函数.
    {
   	 gbc.anchor=GridBagConstraints.CENTER;
   	 gbc.gridx=x;
   	 gbc.gridy=y;
   	 gbc.gridwidth=w;
   	 gbc.gridheight=h;
   	 gbl.setConstraints(com, gbc);
   	 add(com);
    }
	public void actionPerformed(ActionEvent e)
	{
		Object obj=e.getSource();
		if(obj==bt)
		{
			this.dispose();
			Admin_manage ma=new Admin_manage();
			ma.setVisible(true);
		}
	}
	public static void main(String[] args)
	{
		Help hp=new Help();
		hp.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		hp.setVisible(true);
	}

}