Java計算器原始碼

import import import

Java計算器原始碼該計算器有兩個主要部分，標準計算器和科學計算器，科學計算器功能尚未完成。用的知識：按鈕，選單，布局，面板，視窗，事件，對話框，標籤，單選鈕。對Java感興趣，想學習Java不知道怎么學，從事java工作的人，想認識學習java，可以加群，群號一三七，二三九，加上六五三，按順序組合，裡面有免費資料可以完成剩下的功能。讀者可以完成下面的功能。

組成：三個源程式：Cal.java,BPanel.java,KPanel.java//////////////////////////////////////////////////////////////////////////////////////Cal.java////////////////////////////////////////////////////////////////////////////////////////////////////packagecal;

importjava.awt.CardLayout;

importjava.awt.Color;

importjava.awt.Dimension;

importjava.awt.FlowLayout;

importjava.awt.Font;

importjava.awt.GridLayout;

importjava.awt.event.ActionEvent;

importjava.awt.event.ActionListener;

importjava.awt.event.InputEvent;
importjava.awt.event.ItemEvent;

importjava.awt.event.ItemListener;

importjava.awt.event.KeyEvent;

importjava.awt.event.WindowAdapter;

importjava.awt.event.WindowEvent;

importjavax.swing.ButtonGroup;

importjavax.swing.ImageIcon;

importjavax.swing.JDialog;

importjavax.swing.JFrame;

importjavax.swing.JLabel;

importjavax.swing.JMenu;

importjavax.swing.JMenuBar;

importjavax.swing.JMenuItem;

importjavax.swing.JPanel;

importjavax.swing.JRadioButtonMenuItem;

importjavax.swing.KeyStroke;

publicclassCalextendsJFrame{/****/privatestaticfinallongserialVersionUID=1L;

privateJMenuBarmb=null;
privateJMenum1=null;

privateJMenum2=null;

privateJMenum4=null;

privateJMenuItemmt1=null;

publicstaticJMenuItemmt2=null;

privateJRadioButtonMenuItemmt3=null;

privateJRadioButtonMenuItemmt4=null;

privateJMenuItemmt6=null;

privateJMenuItemmt7=null;

privateBPanelbp=newBPanel();

privateKPanelkp=newKPanel();

privateJPanelp=newJPanel();

privatestaticbooleancard=true;

publicstaticbooleanfz=false;

publicstaticStringstr=newString();

privateJPanelp1=newJPanel();

privateCardLayoutc1=newCardLayout();

privateJLabelb=newJLabel();

staticCalcalc;

finalJDialogd1=newJDialog();

finalJDialogd2=newJDialog();

publicstaticColorbc=newColor(255,204,204);

publicstaticColorqc=Color.cyan;

privateFontf=newFont("宋體",Font.BOLD,15);

privateCal(){super("計算器");

this.setLocation(400,250);

this.setForeground(qc);

this.setBackground(bc);

this.setIconImage(newImageIcon("jsq.jpg").getImage());

JFrame.setDefaultLookAndFeelDecorated(true);

p=(JPanel)this.getContentPane();

p.setLayout(newFlowLayout());
p.add(b);

p.add(p1);

p1.setLayout(c1);

p1.add("card1",bp);

p1.add("card2",kp);

this.setJMenuBar(getMb());

initDialog1();

initDialog2();

this.pack();

this.setResizable(false);

this.setVisible(true);
}protectedvoidprocessWindowEvent(WindowEvente){ if(e.getID()==WindowEvent.WINDOW_CLOSING)System.exit(0);

}privateJMenuBargetMb(){mb=newJMenuBar();

mb.setPreferredSize(newDimension(110,35));

mb.setForeground(qc);

mb.setBackground(bc);

mb.add(getM1());

mb.add(getM2());

mb.add(getM4());

returnmb;

privateJMenugetM1(){m1=newJMenu("編輯(F)");

m1.setFont(f);

m1.setBackground(bc);

m1.add(getMt1());

m1.add(getMt2());

returnm1;

}privateJMenugetM2(){m2=newJMenu("類型(L)");

m2.setFont(f);

m2.setBackground(bc);

m2.add(getMt3());

m2.add(getMt4());

ButtonGroupbg=newButtonGroup();

bg.add(mt3);

mt3.setSelected(true);

bg.add(mt4);

returnm2;

}privateJMenugetM4(){m4=newJMenu("幫助(H)");

m4.setFont(f);

m4.setBackground(bc);

m4.add(getMt6());

m4.add(getMt7());

returnm4;}privateJMenuItemgetMt1(){

mt1=newJMenuItem("複製");

mt1.setFont(f);

mt1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,InputEvent.CTRL_MASK));

mt1.setPreferredSize(newDimension(130,30));

mt1.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){try{if(card){if(bp.getTextField().getSelectedText().isEmpty())str=bp.getTextField().getText();

elsestr=bp.getTextField().getSelectedText();

}}catch(Exceptiontx){str=bp.getTextField().getText();