rcalculator.java

这个无限位计算器

               textDisplay.setText(e2.getMessage());
           }
           markE=false;
           markS=0; 
       }
       
       
    }//GEN-LAST:event_butEqualActionPerformed

    private void butDivisionActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_butDivisionActionPerformed
        if (!s.equals(""))
           preNo=s;
        textDisplay.setText("0.");
        markS=4;
        nextNo="";
    }//GEN-LAST:event_butDivisionActionPerformed

    private void butMultiplicationActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_butMultiplicationActionPerformed
        if (!s.equals(""))
           preNo=s;
        textDisplay.setText("0.");
        markS=3;
        nextNo="";
    }//GEN-LAST:event_butMultiplicationActionPerformed

    private void butSubtractionActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_butSubtractionActionPerformed
        if  (!s.equals(""))
           preNo=s;
        textDisplay.setText("0.");
        markS=2;
        nextNo="";
    }//GEN-LAST:event_butSubtractionActionPerformed

    private void butAdditionActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_butAdditionActionPerformed
        if (!s.equals(""))
           preNo=s;
        textDisplay.setText("0.");
        markS=1;
        nextNo="";
    }//GEN-LAST:event_butAdditionActionPerformed

    private void butCActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_butCActionPerformed
         s="";
         textDisplay.setText("0.");
    }//GEN-LAST:event_butCActionPerformed

    private void butDotActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_butDotActionPerformed
         if (evt.getSource()==butDot)
         {
            if (!s.equals("0.") && textDisplay.getText().equals("0."))
            {

            }
            else
            {
                if (s.indexOf(".")==-1)
                    s=s.concat(".");
                textDisplay.setText(s); 
            }           
         }
    }//GEN-LAST:event_butDotActionPerformed

    private void calBut0ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_calBut0ActionPerformed
         if (evt.getSource()==calBut0)
             {
                if (!s.equals("0.") && textDisplay.getText().equals("0."))
                {
                s="0";
                textDisplay.setText(s);
                }
                else
                {
                s=s.concat("0");
                textDisplay.setText(s);
                }

             }
    }//GEN-LAST:event_calBut0ActionPerformed

    private void calBut3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_calBut3ActionPerformed
         if (evt.getSource()==calBut3)
             {
               
                if (!s.equals("0.") && textDisplay.getText().equals("0."))
                {
                s="3";
                textDisplay.setText(s);
                }
                else
                {
                s=s.concat("3");
                textDisplay.setText(s);
                }

             }
    }//GEN-LAST:event_calBut3ActionPerformed

    private void calBut2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_calBut2ActionPerformed
         if (evt.getSource()==calBut2)
             {
                
                if (!s.equals("0.") && textDisplay.getText().equals("0."))
                {
                s="2";
                textDisplay.setText(s);
                }
                else
                {
                s=s.concat("2");
                textDisplay.setText(s);
                }

             }
    }//GEN-LAST:event_calBut2ActionPerformed

    private void calBut1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_calBut1ActionPerformed
         if (evt.getSource()==calBut1)
             {               
                if (!s.equals("0.") && textDisplay.getText().equals("0."))
                {
                s="1";
                textDisplay.setText(s);
                }
                else
                {
                s=s.concat("1");
                textDisplay.setText(s);
                }

             }
    }//GEN-LAST:event_calBut1ActionPerformed

    private void calBut6ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_calBut6ActionPerformed
         if (evt.getSource()==calBut6)
             {                
                if (!s.equals("0.") && textDisplay.getText().equals("0."))
                {
                s="6";
                textDisplay.setText(s);
                }
                else
                {
                s=s.concat("6");
                textDisplay.setText(s);
                }

             }
    }//GEN-LAST:event_calBut6ActionPerformed

    private void calBut5ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_calBut5ActionPerformed
         if (evt.getSource()==calBut5)
             {
                if (!s.equals("0.") && textDisplay.getText().equals("0."))
                {
                s="5";
                textDisplay.setText(s);
                }
                else
                {
                s=s.concat("5");
                textDisplay.setText(s);
                }

             }
    }//GEN-LAST:event_calBut5ActionPerformed

    private void calBut4ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_calBut4ActionPerformed
         if (evt.getSource()==calBut4)
             {
                if (!s.equals("0.") && textDisplay.getText().equals("0."))
                {
                s="4";
                textDisplay.setText(s);
                }
                else
                {
                s=s.concat("4");
                textDisplay.setText(s);
                }

             }
    }//GEN-LAST:event_calBut4ActionPerformed

    private void calBut9ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_calBut9ActionPerformed
         if (evt.getSource()==calBut9)
             {
                if (!s.equals("0.") && textDisplay.getText().equals("0."))
                {
                s="9";
                textDisplay.setText(s);
                }
                else
                {
                s=s.concat("9");
                textDisplay.setText(s);
                }

             }
    }//GEN-LAST:event_calBut9ActionPerformed

    private void calBut7ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_calBut7ActionPerformed
         if (evt.getSource()==calBut7)
             {
                if (!s.equals("0.") && textDisplay.getText().equals("0."))
                {
                s="7";
                textDisplay.setText(s);
                }
                else
                {
                s=s.concat("7");
                textDisplay.setText(s);
                }

             }
    }//GEN-LAST:event_calBut7ActionPerformed

    private void calBut8ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_calBut8ActionPerformed
          if (evt.getSource()==calBut8)
             {
                if (!s.equals("0.") && textDisplay.getText().equals("0."))
                {
                s="8";
                textDisplay.setText(s);
                }
                else
                {
                s=s.concat("8");
                textDisplay.setText(s);
                }

             }
    }//GEN-LAST:event_calBut8ActionPerformed
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Rcalculator().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JPanel bluePanel;
    private javax.swing.JButton butAddition;
    private javax.swing.JButton butC;
    private javax.swing.JButton butDivision;
    private javax.swing.JButton butDot;
    private javax.swing.JButton butEqual;
    private javax.swing.JButton butMultiplication;
    private javax.swing.JButton butN;
    private javax.swing.JButton butSquare;
    private javax.swing.JButton butSubtraction;
    private javax.swing.JButton calBut0;
    private javax.swing.JButton calBut1;
    private javax.swing.JButton calBut2;
    private javax.swing.JButton calBut3;
    private javax.swing.JButton calBut4;
    private javax.swing.JButton calBut5;
    private javax.swing.JButton calBut6;
    private javax.swing.JButton calBut7;
    private javax.swing.JButton calBut8;
    private javax.swing.JButton calBut9;
    private javax.swing.JButton calHelp;
    private javax.swing.JPanel greenPanel;
    private javax.swing.JPanel magentPanel;
    private javax.swing.JPanel pinkAbove;
    private javax.swing.JPanel redPanel;
    private javax.swing.JTextField textDisplay;
    private javax.swing.JPanel yellowUnder;
    // End of variables declaration//GEN-END:variables
    
}