使用java swing仿window7标准计算器界面

1、目标：初始化窗体代码：如下----------------public class View extends JFrame{ public View(){ this.setTitle("计算器");//设置标题 this.setResizable(false);//不可改变大小 this.setLocationRelativeTo(null);//居中显示 this.setSize(228, 324);//窗体大小，可以使用FastStone Capture的屏幕尺量一下win计算器的大小 this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//默认关闭操作 } public static void main(String[] args) { new View().setVisible(true); }}

2、目标：设置菜单代码：如下---------------- /** * 创建初始化菜单方法(别忘记在构造函数里调用) */ private void initMenu(){ jmb = new JMenuBar();//创建菜单条 jm_view = new JMenu("查看(V)");//查看菜单 jm_view.setMnemonic('V');//设置热键 jm_edit = new JMenu("编辑(E)");//编辑菜单 jm_edit.setMnemonic('E'); jm_help = new JMenu("帮助(H)");//帮助菜单 jm_help.setMnemonic('H'); jmb.add(jm_view); jmb.add(jm_edit); jmb.add(jm_help); this.setJMenuBar(jmb);//将菜单条加入窗体中 }

3、目标：仿结果显示框代码：如下----------------/** * 创建内容区域初始化方法 */ private void initContent(){ //整个窗口区域 JPanel jp = new JPanel(); jp.setLayout(null);//设置空布局以便绝对定位 //显示框区域 JPanel jptmp = new JPanel(){ //获取背景图片，使用截图工具从win计算器显示框中截取2像素宽度作为背景 Image bg = new ImageIcon("imgs/bg.png").getImage(); /** * 填充结果显示区域的背景 */ @Override protected void paintComponent(Graphics g) { super.paintComponent(g); //x轴平铺满面板 for(int i = 0;i<this.getWidth();i+=bg.getWidth(this)){ g.drawImage(bg, i, 0, this);//绘制背景图片 } } }; //设置显示框上方小字体 Font font_lab = new Font("arial", Font.BOLD, 22); jla_input = new JLabel(); jla_input.setText("0"); //设置字体右对齐 jla_input.setHorizontalAlignment(JLabel.RIGHT); jla_input.setFont(font_lab); //设置显示框中计算结果的字体 font_lab = new Font("arial", Font.BOLD, 10); jla_show = new JLabel(); jla_show.setText("sqrt"); //设置字体右对齐 jla_show.setHorizontalAlignment(JLabel.RIGHT); jla_show.setFont(font_lab); //设置显示框区域的位置的大小 jptmp.setBounds(14, 15, 190, 50); jptmp.setLayout(new BorderLayout()); jptmp.add(jla_show,BorderLayout.NORTH); jptmp.add(jla_input,BorderLayout.CENTER); //设置边框 jptmp.setBorder(BorderFactory.createLineBorder(new Color(142,156,173))); jp.add(jptmp); this.setLayout(new BorderLayout()); this.add(jp,BorderLayout.CENTER); }

4、目标：绘制其他按钮代码：如下-颍骈城茇---------------①设置字符枚举类public enum Operator{//用于swith判断，待用 mC,mR,mS,mAdd,mSubtr锾攒揉敫act,//mc,mr,ms,m+,m- clBack,clError,clClear,operNegation,operSqrt,//<-,ce,c,-/+,开平方 n7,n8,n9,operDivide,operPer,// /,%, n4,n5,n6,operMultiply,operReciproc,//*,倒数 n1,n2,n3,operSubtract,operEqu,//-,= n0,operDot,operAdd;//+//用于显示 public static final String [] labs = new String[]{ "MC","MR","MS","M+","M-", "←","CE","C","±","√", "7","8","9","/","%", "4","5","6","*","1/x", "1","2","3","-","=", "0",".","+" };}②添加按钮jptmp = new JPanel(); jptmp.setBounds(14, 72, 196,194); jptmp.setLayout(null); Font font_but = new Font("arial", Font.BOLD, 10);//创建按钮字体 for (int i = 0; i < jb_oper.length; i++) { jb_oper[i] = new JButton(Operator.labs[i]);//设置按钮文字 jb_oper[i].setForeground(new Color(30,57,91));//设置字体颜色 jb_oper[i].setActionCommand(Operator.values()[i].toString());//设置按钮标示 jb_oper[i].setFont(font_but);//设置按钮字体 jb_oper[i].setBounds(i%5*(33+6), i/5*(24+6), 33, 24);//统一33宽,24高,间距6，每5个换一行 jb_oper[i].setBorder(new LineBorder(new Color(135,151,170), 1));//设置按钮边框 jb_oper[i].addActionListener(this);//添加监听器 jptmp.add(jb_oper[i]); } jb_oper[24].setBounds(24%5*(33+6), 24/5*(24+6), 33, 24*2+6);//调整等号按钮位置 jb_oper[25].setBounds(25%5*(33+6), 25/5*(24+6), 33*2+6, 24);//调整0按钮的位置 jb_oper[26].setBounds(27%5*(33+6), 26/5*(24+6), 33, 24);//调整.按钮的位置 jb_oper[27].setBounds(28%5*(33+6), 27/5*(24+6), 33, 24);//调整较好按钮的位置 jp.add(jptmp);

5、完整代码-----package com.lfd.view;import java.awt.Bord髫潋啜缅erLayout;import java.awt.Color;import java.awt.Font;import java.awt.Graphics;import java.awt.Image;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.BorderFactory;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JMenu;import javax.swing.JMenuBar;import javax.swing.JPanel;import javax.swing.border.LineBorder;import com.lfd.common.Operator;public class View extends JFrame implements ActionListener{ private JMenuBar jmb; private JMenu jm_view,jm_edit,jm_help; private JLabel jla_input,jla_show; private JButton[] jb_oper = new JButton[28]; public View(){ initMenu(); initContent(); this.setTitle("计算器");//设置标题 this.setResizable(false);//不可改变大小 this.setLocationRelativeTo(null);//居中显示 this.setSize(228, 324);//窗体大小，可以使用FastStone Capture的屏幕尺量一下win计算器的大小 this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//默认关闭操作 } /** * 初始化菜单方法 */ private void initMenu(){ jmb = new JMenuBar();//创建菜单条 jm_view = new JMenu("查看(V)");//查看菜单 jm_view.setMnemonic('V');//设置热键 jm_edit = new JMenu("编辑(E)");//编辑菜单 jm_edit.setMnemonic('E'); jm_help = new JMenu("帮助(H)");//帮助菜单 jm_help.setMnemonic('H'); jmb.add(jm_view); jmb.add(jm_edit); jmb.add(jm_help); this.setJMenuBar(jmb);//将菜单条加入窗体中 } /** * 创建内容区域初始化方法 */ private void initContent(){ //整个窗口区域 JPanel jp = new JPanel(); jp.setLayout(null); //显示框区域 JPanel jptmp = new JPanel(){ //获取背景图片，使用截图工具从win计算器显示框中截取2像素宽度作为背景 Image bg = new ImageIcon("imgs/bg.png").getImage(); /** * 填充结果显示区域的背景 */ @Override protected void paintComponent(Graphics g) { super.paintComponent(g); //x轴平铺满面板 for(int i = 0;i<this.getWidth();i+=bg.getWidth(this)){ g.drawImage(bg, i, 0, this);//绘制背景图片 } } }; //设置显示框上方小字体 Font font_lab = new Font("arial", Font.BOLD, 22); jla_input = new JLabel(); jla_input.setText("0"); //设置字体右对齐 jla_input.setHorizontalAlignment(JLabel.RIGHT); jla_input.setFont(font_lab); //设置显示框中计算结果的字体 font_lab = new Font("arial", Font.BOLD, 10); jla_show = new JLabel(); jla_show.setText("sqrt"); //设置字体右对齐 jla_show.setHorizontalAlignment(JLabel.RIGHT); jla_show.setFont(font_lab); //设置显示框区域的位置的大小 jptmp.setBounds(14, 15, 190, 50); jptmp.setLayout(new BorderLayout()); jptmp.add(jla_show,BorderLayout.NORTH); jptmp.add(jla_input,BorderLayout.CENTER); //设置边框 jptmp.setBorder(BorderFactory.createLineBorder(new Color(142,156,173))); jp.add(jptmp); jptmp = new JPanel(); jptmp.setBounds(14, 72, 196,194); jptmp.setLayout(null); Font font_but = new Font("arial", Font.BOLD, 10);//创建按钮字体 for (int i = 0; i < jb_oper.length; i++) { jb_oper[i] = new JButton(Operator.labs[i]);//设置按钮文字 jb_oper[i].setForeground(new Color(30,57,91));//设置字体颜色 jb_oper[i].setActionCommand(Operator.values()[i].toString());//设置按钮标示 jb_oper[i].setFont(font_but);//设置按钮字体 jb_oper[i].setBounds(i%5*(33+6), i/5*(24+6), 33, 24);//统一33宽,24高,间距6，每5个换一行 jb_oper[i].setBorder(new LineBorder(new Color(135,151,170), 1));//设置按钮边框 jb_oper[i].addActionListener(this);//添加监听器 jptmp.add(jb_oper[i]); } jb_oper[24].setBounds(24%5*(33+6), 24/5*(24+6), 33, 24*2+6);//调整等号按钮位置 jb_oper[25].setBounds(25%5*(33+6), 25/5*(24+6), 33*2+6, 24);//调整0按钮的位置 jb_oper[26].setBounds(27%5*(33+6), 26/5*(24+6), 33, 24);//调整.按钮的位置 jb_oper[27].setBounds(28%5*(33+6), 27/5*(24+6), 33, 24);//调整较好按钮的位置 jp.add(jptmp); this.setLayout(new BorderLayout()); this.add(jp,BorderLayout.CENTER); } public static void main(String[] args) { new View().setVisible(true); } @Override public void actionPerformed(ActionEvent e) { //TODO 实现逻辑操作 JButton jb = (JButton) e.getSource(); String commond = jb.getActionCommand(); }}-----package com.lfd.common;public enum Operator{ mC,mR,mS,mAdd,mSubtract,//mc,mr,ms,m+,m- clBack,clError,clClear,operNegation,operSqrt,//<-,ce,c,-/+,开平方 n7,n8,n9,operDivide,operPer,// /,%, n4,n5,n6,operMultiply,operReciproc,//*,倒数 n1,n2,n3,operSubtract,operEqu,//-,= n0,operDot,operAdd;//+ public static final String [] labs = new String[]{ "MC","MR","MS","M+","M-", "←","CE","C","±","√", "7","8","9","/","%", "4","5","6","*","1/x", "1","2","3","-","=", "0",".","+" };}