pswddialog.java

有打开文件、保存文件、自动换行、复制、剪切、设置字体等功能

package mypack;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

class PswdDialog extends JFrame implements ActionListener //登陆窗口
{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1309119639285286499L;
	Container  conPsw;
	JLabel     labelName,labelPsw,labelMessage;
	JTextField textName;
	JPasswordField textPsw;
	JButton buttonCheck,buttonCannel;
	char psw[],check[]={'1','2','3','4','5','6'};
	int temp=0;
	PswdDialog(String s)
	{
		super(s);
		conPsw=getContentPane();
		conPsw.setLayout(null);
		setSize(400,300);           //设置窗体初始大小
		setLocation(120,120);       //设置窗体初始位置
		setVisible(true);          //设置窗体是否可见 
		setResizable(false);       //设置窗体不能改变大小   
		conPsw.setBackground(Color.green);  //设置背景
		
		labelMessage=new JLabel("欢迎使用本文本编辑器",JLabel.CENTER);
		labelName=new JLabel("帐号：");
		labelPsw=new JLabel("密码：");
		textName=new JTextField(10);
		textPsw=new JPasswordField(10);
		textPsw.setEchoChar('*');
		buttonCheck=new JButton("确认");
		buttonCheck.addActionListener(this);
		buttonCannel=new JButton("取消");
		buttonCannel.addActionListener(this);
		conPsw.add(labelMessage);
		conPsw.add(labelName);
		conPsw.add(labelPsw);
		conPsw.add(textName);
		conPsw.add(textPsw);
		conPsw.add(buttonCheck);
		conPsw.add(buttonCannel);
		
		labelMessage.setBounds(0, 0, 400, 20);
		labelName.setBounds(100,40,50,20);
		labelPsw.setBounds(100,120,50,20);
		textName.setBounds(230,40,100,20);
		textPsw.setBounds(230,120,100,20);
		buttonCheck.setBounds(70,200,100,20);
		buttonCannel.setBounds(230,200,100,20);
		
		conPsw.validate();
		validate();
		
		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		  
	}
	public void actionPerformed(ActionEvent e) {   //判断密码
		// TODO 自动生成方法存根
		if(e.getSource()==buttonCheck)
		{   
			psw=textPsw.getPassword();
			if(psw.length==6)
			{
					for(int i=0;i<psw.length-1;i++)
					{
						if(psw[i]==check[i])
						{
							temp=1;
						}else temp=0;
					}
					if(temp==1)        //密码正确进入文本编辑窗口
					{
						FristWindow win=new FristWindow("Skyer's Windows");
						setVisible(false);
					}
					else
					{
						JOptionPane.showMessageDialog(conPsw,"密码错误!","Warn",JOptionPane.WARNING_MESSAGE);
						textPsw.setText("");
				    }
		    }
			else              //密码不正确重新输入  
				{
				JOptionPane.showMessageDialog(conPsw,"密码错误!","Warn",JOptionPane.WARNING_MESSAGE);
				textPsw.setText("");
		        }
			}
		else if(e.getSource()==buttonCannel)
		{
			System.exit(0);
		}
	}
	
	
}