java编写计算器，java计算器,import java.

java编写计算器，java计算器,import java.

import java.awt.Color;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.File;import javax.swing.Icon;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JTextField;class Courser implements ActionListener{private JFrame jf=new JFrame("newComputer");private JTextField jte=new JTextField();    private Icon icon=new ImageIcon("A:"+File.separator+"b.jpg");private JLabel jl=new JLabel(icon);private JButton j0,j1,j2,j3,j4,j5,j6,j7,j8,j9,j11,j12,j13,j14,j15,j16,j17,j18;  private Double w=0.0;private String s1="";private Double d1=0.0;private String s2="";private Double d2=0.0;private String s3="";private Double d3=0.0;private boolean boo1=false;private boolean boo2=false;private boolean boo3=false;public Courser(){this.Jbutton();    this.Setsize();    jf.add(jl);    jf.add(jte);    jf.add(j1);    jf.add(j2);    jf.add(j3);    jf.add(j4);    jf.add(j5);    jf.add(j6);    jf.add(j7);    jf.add(j8);    jf.add(j9);    jf.add(j0);    jf.add(j11);    jf.add(j12);    jf.add(j13);    jf.add(j14);    jf.add(j15);    jf.add(j16);    jf.add(j17);    jf.add(j18);    jf.setVisible(true);}public void Setsize(){           jte.setText("0.0");              jf.setLayout(null);                jte.setEnabled(false);                 jte.setHorizontalAlignment(JTextField.RIGHT);jf.setSize(390,350);                      jl.setSize(390, 350);                    jte.setBounds(10, 10, 350, 40);        j1.setBounds(10, 60, 80, 40);     j2.setBounds(100, 60, 80, 40);     j3.setBounds(190, 60, 80, 40);     j11.setBounds(280, 60, 80, 40);     j4.setBounds(10, 110, 80, 40);     j5.setBounds(100, 110, 80, 40);     j6.setBounds(190, 110, 80, 40);     j12.setBounds(280, 110, 80, 40);     j7.setBounds(10, 160, 80, 40);     j8.setBounds(100, 160, 80, 40);     j9.setBounds(190, 160, 80, 40);     j13.setBounds(280, 160, 80, 40);     j0.setBounds(10, 210, 80, 40);     j18.setBounds(100, 210, 80, 40);     j17.setBounds(190, 210, 80, 40);     j14.setBounds(280, 210, 80, 40);     j15.setBounds(10, 260, 170, 40);     j16.setBounds(190, 260, 170, 40); }                                   public void Jbutton(){               j0=JB("0");                          j1=JB("1");                          j2=JB("2");                           j3=JB("3");                        j4=JB("4");                           j5=JB("5");                        j6=JB("6");                         j7=JB("7");                          j8=JB("8");                         j9=JB("9");                          j11=JB("+");                         j13=JB("*");                           j14=JB("/");                          j15=JB("backspace");                 j16=JB("c");                          j17=JB("=");                          j18=JB(".");                     }                                   public JButton JB(String s){       JButton jbu=new JButton(s);     jbu.addActionListener(this);     return jbu;                     }                                     public void actionPerformed(ActionEvent e) {JButton b=(JButton)e.getSource();if(Double.parseDouble(jte.getText())==0.0){boo1=false;}if(b==j1||b==j2||b==j3||b==j4||b==j5||b==j6||b==j7||b==j8||b==j9){/if(boo2==false){                                              //if(boo1){                                                 //s1+=b.getText();                                      //jte.setText(jte.getText()+b.getText());               //}else{                                                   //if(boo3){                                            //boo3=false;                                      //s1+=b.getText();                                 //jte.setText(jte.getText()+b.getText());          //}else{                                               //s1=b.getText();                                  //jte.setText(s1);                                 //boo1=true;                                       //}                                                    //}                                                        //}if(boo2==true){                                             //if(boo1){                                                //s2+=b.getText();                                     //jte.setText(s2);                                     //}else{                                                   //if(boo3){                                            //boo3=false;                                      //s2+=b.getText();                                 //jte.setText(s2);                                  //}else{                                               //s2=b.getText();                                  //jte.setText(s2);                                 //boo1=true;                                       //}                                                    //}                                                        //}if("="==s3){                                                //boo2=false;                                               //s1="";                                                   //s2="";                                                   //}                                                            //}                                                              if(b==j0){           if(boo2==false){if(boo1){s1+=b.getText();jte.setText(jte.getText()+b.getText());}else{s1=b.getText();jte.setText("0");}}if(boo2==true){if(boo1){s2+=b.getText();jte.setText(s2);}else{s2=b.getText();jte.setText("0.0");}}if("="==s3){boo2=false;s1="";s2="";}}if(b==j18){if("="==s3){boo2=false;s1="";s2="";}if(boo2==false){if(s1!=""){if(!(s1.contains("."))){s1+=b.getText();jte.setText(s1);boo3=true;}}}if(boo2==true){if(s2!=""){if(!(s2.contains("."))){s2+=b.getText();jte.setText(s2);boo3=true;}}}}if(b==j11||b==j12||b==j13||b==j14||b==j17){if(s1!=""&&s2==""){boo2=true;}if(s2!=""){d1=Double.parseDouble(s1);d2=Double.parseDouble(s2);char c=s3.charAt(0);switch (c){   case'+':{    d3=d1+d2;   break;   }   case'-':{    d3=d1-d2;   break;   }   case'*':{    d3=d1*d2;   break;   }   case'/':{    d3=d1/d2;   break;   }}jte.setText(""+d3);s1=""+d3;s2="";}s3=b.getText();}if(b==j16){s1="0.0";s2="0.0";d1=0.0;d2=0.0;jte.setText("0.0") ;}if(b==j15){if(boo2==false){if(jte.getText().length()==1){s1="0.0";s2="0.0";d1=0.0;d2=0.0;    jte.setText("0.0");    }else{    s1=jte.getText().substring(0, jte.getText().length()-1);    jte.setText(jte.getText().substring(0, jte.getText().length()-1));    }}else{if(jte.getText().length()==1){s2="0.0";d2=0.0;    jte.setText("0.0");    }else{    s2=jte.getText().substring(0, jte.getText().length()-1);    jte.setText(jte.getText().substring(0, jte.getText().length()-1));    }}    }}}public class NewCom {public static void main(String[] args) {new Courser();}}