businesspanel.java

银行的一个管理系统

package corejava.bam.client;
import java.awt.*;

import javax.swing.*;
import javax.swing.border.EmptyBorder;

import corejava.day09.bam.*;
public class BusinessPanel extends JPanel{

	private JLabel idLabel1,idLabel2,nameLabel1,nameLabel2,balanceLabel1,balanceLabel2;
	private JLabel cellingLabel1,cellingLabel2,loanLabel1,loanLabel2;
	private JComboBox choiceBox;
	private JTextField balanceField;
	private JButton okButton;
	
	public BusinessPanel(){
		idLabel1=new JLabel("帐号 :",SwingConstants.CENTER);
		idLabel2=new JLabel("",SwingConstants.CENTER);
		nameLabel1=new JLabel("姓名 :",SwingConstants.CENTER);
		nameLabel2=new JLabel("",SwingConstants.CENTER);
		balanceLabel1=new JLabel("余额 :",SwingConstants.CENTER);
		balanceLabel2=new JLabel("",SwingConstants.CENTER);
		cellingLabel1=new JLabel("透支额 :",SwingConstants.CENTER);
		cellingLabel2=new JLabel("",SwingConstants.CENTER);
		loanLabel1=new JLabel("贷款额 :",SwingConstants.CENTER);
		loanLabel2=new JLabel("",SwingConstants.CENTER);
		choiceBox=new JComboBox();
		balanceField=new JTextField(15);
		okButton=new JButton("确定");
		
		choiceBox.addItem("存款");
		choiceBox.addItem("取款");
		
		JPanel jp1=new JPanel(new GridLayout(5,2,0,10));
		JPanel jp2=new JPanel();
		
		jp1.add(idLabel1);
		jp1.add(idLabel2);
		jp1.add(nameLabel1);
		jp1.add(nameLabel2);
		jp1.add(balanceLabel1);
		jp1.add(balanceLabel2);
		jp1.add(cellingLabel1);
		jp1.add(cellingLabel2);
		jp1.add(loanLabel1);
		jp1.add(loanLabel2);
	
		jp2.add(choiceBox);
		jp2.add(balanceField);
		jp2.add(okButton);
		
		this.setLayout(new BorderLayout());
		this.setBorder(new EmptyBorder(5,0,10,10));
		this.add(jp1);
		this.add(jp2,BorderLayout.SOUTH);
		
	}
	public void initPane(Account a){
		if(a instanceof CreditAccount){
			choiceBox.addItem("设置透支额度");
		}else{
			cellingLabel1.setEnabled(false);
		}
		if(a instanceof Loanable){
			choiceBox.addItem("申请贷款");
			choiceBox.addItem("还贷款");
		}else{
			loanLabel1.setEnabled(false);
		}
	}
	public void setPane(Account a){
		idLabel2.setText(a.getId()+"");
		nameLabel2.setText(a.getName());
		balanceLabel2.setText(a.getBalance()+"");
		if(a instanceof CreditAccount){
			CreditAccount ca=(CreditAccount)a;
			cellingLabel2.setText(ca.getCelling()+"");
		}
		if(a instanceof Loanable){
			Loanable la=(Loanable)a;
			loanLabel2.setText(la.getLoan()+"");
		}
	}
	public static void main(String[] args) {
		JFrame jf=new JFrame();
		jf.add(new BusinessPanel());
		
		jf.setSize(400,400);
		jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		jf.setVisible(true);
	}

}