java swing实现QQ账号密码输入框

import java.awt.BasicStroke;import java.awt.Color;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.RenderingHints; import javax.swing.JPanel; public class AccountPanel extends JPanel{  private static final long serialVersionUID = 1L;  private Color normalc=Color.LIGHT_GRAY; private Color borderc=Color.LIGHT_GRAY; private boolean flag=false;  public AccountPanel(){}  public AccountPanel(Color normalc,Color borderc){ this.normalc=normalc; this.borderc=borderc; }  public void setBorder(boolean flag){ this.flag=flag; }   @Override public void paintComponent(Graphics g){  super.paintComponent(g);  Graphics2D g2=(Graphics2D) g;  //设置绘图质量 g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);  //画一个顶部两个角为圆角，底部两个角为直角的矩形 g2.setColor(Color.white); g2.fillRoundRect(0, 0, 190, 30, 10, 10); g2.fillRect(0, 10, 190, 17);  //为该矩形添加边框 if(flag){  g2.setStroke(new BasicStroke(2.0f));  g2.setColor(borderc);  g2.drawArc(1, 1, 10, 10, 180, -90);//绘制圆弧  g2.drawLine(5, 1, 185, 1);  g2.drawArc(179, 1, 10, 10, 90, -90);//绘制圆弧  g2.drawLine(1, 5, 1, 29);  g2.drawLine(189, 5, 189, 29);  g2.drawLine(1, 29, 190, 29); } else{  g2.setStroke(new BasicStroke(1.0f));  g2.setColor(normalc);  g2.drawArc(0, 0, 10, 10, 180, -90);//绘制圆弧  g2.drawLine(5, 0, 185, 0);  g2.drawArc(179, 0, 10, 10, 90, -90);//绘制圆弧  g2.drawLine(0, 5, 0, 30);  g2.drawLine(189, 5, 189, 30);  g2.drawLine(0, 30, 190, 30); }  } }

import java.awt.BasicStroke;import java.awt.Color;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.RenderingHints; import javax.swing.JPanel; public class PasswordPanel extends JPanel{  private static final long serialVersionUID = 1L;  private Color normalc=Color.LIGHT_GRAY; private Color borderc=Color.LIGHT_GRAY; private boolean flag=false;  public PasswordPanel(){}  public PasswordPanel(Color normalc,Color borderc){ this.normalc=normalc; this.borderc=borderc; }  public void setBorder(boolean flag){ this.flag=flag; }  @Override public void paintComponent(Graphics g){  super.paintComponent(g);  Graphics2D g2=(Graphics2D) g;  //设置绘图质量 g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);  //画一个顶部两个角为圆角，底部两个角为直角的矩形 g2.setColor(Color.white); g2.fillRoundRect(0, 0, 190, 30, 10, 10); g2.fillRect(0, 0, 190, 17);  //为该矩形添加边框 //为该矩形添加边框 if(flag){  g2.setStroke(new BasicStroke(2.0f));  g2.setColor(borderc);  g2.drawLine(1, 1, 1, 25);  g2.drawLine(189, 1, 189, 25);  g2.drawLine(1, 1, 190, 1);  g2.drawArc(1, 18, 10, 10, 180, 90);//绘制圆弧  g2.drawArc(179, 18, 10, 10, 270, 90);//绘制圆弧  g2.drawLine(5, 29, 185, 29); } else{  g2.setStroke(new BasicStroke(1.0f));  g2.setColor(normalc);  g2.drawLine(0, 0, 0, 25);  g2.drawLine(189, 0, 189, 25);  g2.drawLine(0, 0, 190, 0);  g2.drawArc(0, 18, 10, 10, 180, 90);//绘制圆弧  g2.drawArc(179, 18, 10, 10, 270, 90);//绘制圆弧  g2.drawLine(5, 29, 185, 29); }  }}

import java.awt.Color;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent; import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JPasswordField;import javax.swing.JTextField;  public class Demo1 {  public static void main(String[] args) {  //初始化窗体 JFrame frame=new JFrame("My QQ"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(300, 200); frame.setLocationRelativeTo(null); frame.setLayout(null);  //添加账号面板 AccountPanel accountPanel=new AccountPanel(Color.LIGHT_GRAY,new Color(56,172,239)); accountPanel.setLayout(null); accountPanel.setBounds(30, 15, 190, 30); frame.add( accountPanel);  //在账号面板中添加文本框 JTextField accountTF=new JTextField(); accountTF.setBounds(7, 0, 153, 30); accountTF.setOpaque(false); accountTF.setBorder(null); accountPanel.add(accountTF);  //在账号面板中的文本框后添加按钮 JButton jb1=new JButton(new ImageIcon(  Demo1.class.getClassLoader().getResource("res/images/btn1.png"))); jb1.setBounds(160, 0, 30, 30); jb1.setBorder(null);//取消边框 jb1.setBorderPainted(false);//不绘制按钮边框 jb1.setContentAreaFilled(false);//设置按钮背景透明 jb1.setFocusPainted(false);//设置按钮不绘制焦点状态 accountPanel.add(jb1);   //密码面板 PasswordPanel passwordPanel=new PasswordPanel(Color.LIGHT_GRAY,new Color(56,172,239)); passwordPanel.setLayout(null); passwordPanel.setBounds(30, 45, 190, 30); frame.add( passwordPanel);  //输入密码文本框 JPasswordField passwordPF=new JPasswordField(); passwordPF.setBounds(7, 0, 153, 30); passwordPF.setOpaque(false); passwordPF.setBorder(null); passwordPanel.add(passwordPF);  //在账号面板中的文本框后添加按钮 JButton jb2=new JButton(new ImageIcon(  Demo1.class.getClassLoader().getResource("res/images/btn2.png"))); jb2.setBounds(160, 0, 30, 30); jb2.setBorder(null); jb2.setBorderPainted(false); jb2.setContentAreaFilled(false); jb2.setFocusPainted(false); passwordPanel.add(jb2);   //为账号输入框添加鼠标监听器 MouseAdapter accountListener=new MouseAdapter(){  @Override  public void mouseEntered(MouseEvent e) {  // TODO Auto-generated method stub  accountPanel.setBorder(true);  accountPanel.updateUI();  }   @Override  public void mouseExited(MouseEvent e) {  // TODO Auto-generated method stub  accountPanel.setBorder(false);  accountPanel.updateUI();  } }; accountTF.addMouseListener(accountListener); jb1.addMouseListener(accountListener);   //为密码输入框添加鼠标监听器 MouseAdapter passwordListener=new MouseAdapter(){  @Override  public void mouseEntered(MouseEvent e) {  // TODO Auto-generated method stub  passwordPanel.setBorder(true);  passwordPanel.updateUI();  }   @Override  public void mouseExited(MouseEvent e) {  // TODO Auto-generated method stub  passwordPanel.setBorder(false);  passwordPanel.updateUI();  } }; passwordPF.addMouseListener(passwordListener); jb2.addMouseListener(passwordListener);   frame.setVisible(true); } }