记录学习过程

import javax.swing.*;
import java.awt.*;public class LoginPanel extends JPanel {public static final int  LEFT_PADDING=50;public static final int  RIGHT_PADDING=50;public static final int  TOP_PADDING=20;public static final int  BOTTOM_PADDING=20;public static final int  H_GAP=8;public static final int  V_GAP=7;public void initPanel(){this.setLayout(null);JLabel title = new JLabel("用户注册");Font titleFont =new Font("微软雅黑",Font.BOLD,20);title.setFont(titleFont);Dimension titleD=title.getPreferredSize();JLabel userLabel =new JLabel("用户名");JTextField userField=new JTextField();userField.setPreferredSize(new Dimension(200,22));int panelWidth = userLabel.getPreferredSize().width+H_GAP+userField.getPreferredSize().width+LEFT_PADDING+RIGHT_PADDING;//设置title位置int titleX=panelWidth/2-titleD.width/2;int titleY=TOP_PADDING;title.setBounds(titleX,titleY,titleD.width,titleD.height);this.add(title);//设置用户名标签的位置int userLabelX=LEFT_PADDING;int userLabelY=titleY+title.getPreferredSize().height+V_GAP;userLabel.setBounds(userLabelX,userLabelY,userLabel.getPreferredSize().width,userLabel.getPreferredSize().height);this.add(userLabel);//设置用户输入框的位置int userFieldX=userLabelX+userLabel.getPreferredSize().width+H_GAP;int userFieldY=userLabelY;userField.setBounds(userFieldX,userFieldY,userField.getPreferredSize().width,userField.getPreferredSize().height);this.add(userField);JLabel passwordLabel =new JLabel("密码");//设置密码标签的位置int passwordLabelX= userLabelX;int passwordLabelY=userLabelY+userLabel.getPreferredSize().height+V_GAP;passwordLabel.setBounds(passwordLabelX,passwordLabelY,passwordLabel.getPreferredSize().width,passwordLabel.getPreferredSize().height);this.add(passwordLabel);JPasswordField passwordField =new JPasswordField();passwordField.setPreferredSize(new Dimension(200,22));//需要去设置密码输入框的位置int passwordFieldX=userFieldX;int passwordFieldY=passwordLabelY;passwordField.setBounds(passwordFieldX,passwordFieldY,passwordField.getPreferredSize().width,passwordField.getPreferredSize().height);this.add(passwordField);JLabel sexLabel=new JLabel("性别");//设置性别标签的位置int sexLabelX=passwordLabelX;int sexLabelY=passwordLabelY+passwordLabel.getPreferredSize().height+V_GAP;sexLabel.setBounds(sexLabelX,sexLabelY,sexLabel.getPreferredSize().width,sexLabel.getPreferredSize().height);this.add(sexLabel);JRadioButton manButton= new JRadioButton("男");JRadioButton womanButton= new JRadioButton("女");ButtonGroup bg= new ButtonGroup();bg.add(manButton);bg.add(womanButton);//设置性别选择按钮的位置int manButtonX=sexLabelX+sexLabel.getPreferredSize().width+H_GAP;int manButtonY=sexLabelY;manButton.setBounds(manButtonX,manButtonY,manButton.getPreferredSize().width,manButton.getPreferredSize().height);int womanButtonX=manButtonX+manButton.getPreferredSize().width+H_GAP;int womanButtonY=manButtonY;womanButton.setBounds(womanButtonX,womanButtonY,womanButton.getPreferredSize().width,womanButton.getPreferredSize().height);this.add(manButton);this.add(womanButton);JLabel hobby=new JLabel("爱好");JCheckBox study=new JCheckBox("学习");JCheckBox music =new JCheckBox("听音乐");JCheckBox book =new JCheckBox("看书");JCheckBox game=new JCheckBox("游戏");//设置爱好按钮的位置int hobbyX=sexLabelX;int hobbyY=sexLabelY+sexLabel.getPreferredSize().height+V_GAP;hobby.setBounds(hobbyX,hobbyY,hobby.getPreferredSize().width,hobby.getPreferredSize().height);this.add(hobby);int studyX=hobbyX+hobby.getPreferredSize().width+H_GAP;int studyY=hobbyY;study.setBounds(studyX,studyY,study.getPreferredSize().width,study.getPreferredSize().height);this.add(study);int musicX=studyX+study.getPreferredSize().width+H_GAP;int musicY=studyY;music.setBounds(musicX,musicY,music.getPreferredSize().width,music.getPreferredSize().height);this.add(music);int bookX=studyX;int bookY=studyY+study.getPreferredSize().height+H_GAP;book.setBounds(bookX,bookY,book.getPreferredSize().width,book.getPreferredSize().height);this.add(book);int gameX=musicX;int gameY=bookY;game.setBounds(gameX,gameY,game.getPreferredSize().width,game.getPreferredSize().height);this.add(game);JLabel education = new JLabel("学历");int educationX=sexLabelX;int educationY=bookY+book.getPreferredSize().height+V_GAP;education.setBounds(educationX,educationY,education.getPreferredSize().width,education.getPreferredSize().height);this.add(education);JComboBox<String> eduBox = new JComboBox<String>();eduBox.addItem("大专");eduBox.addItem("高中");//设置学历按钮的位置int eduBoxX=educationX+education.getPreferredSize().width+H_GAP+30;int eduBoxY=educationY;eduBox.setBounds(eduBoxX,eduBoxY,eduBox.getPreferredSize().width,eduBox.getPreferredSize().height);this.add(eduBox);JLabel reduce = new JLabel("自我介绍");JTextArea reduceArea =new JTextArea();reduceArea.setPreferredSize(new Dimension(160,100));//设置自我介绍的位置int reduceX=educationX;int reduceAreaY=eduBoxY+eduBox.getPreferredSize().height+V_GAP;int reduceY=reduceAreaY+reduceArea.getPreferredSize().height/2-reduce.getPreferredSize().height/2;reduce.setBounds(reduceX,reduceY,reduce.getPreferredSize().width,reduce.getPreferredSize().height);int reduceAreaX=reduceX+reduce.getPreferredSize().width+H_GAP;reduceArea.setBounds(reduceAreaX,reduceAreaY,reduceArea.getPreferredSize().width,reduceArea.getPreferredSize().height);this.add(reduce);this.add(reduceArea);JButton regist=new JButton("注册");int registX=panelWidth/2-regist.getPreferredSize().width/2;int registY=reduceY+reduce.getPreferredSize().height+reduceArea.getPreferredSize().height/2+V_GAP;regist.setBounds(registX,registY,regist.getPreferredSize().width,regist.getPreferredSize().height);this.add(regist);int panelHeight=registY+regist.getPreferredSize().height+TOP_PADDING+BOTTOM_PADDING;this.setSize(panelWidth,panelHeight);}
}

import javax.swing.*;public class LoginFrame extends JFrame {public void init(){LoginPanel lp=new LoginPanel();lp.initPanel();this.add(lp);this.setSize(lp.getPreferredSize());this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);this.setVisible(true);}public static void main(String[] args) {LoginFrame lf=new LoginFrame();lf.init();}
}