Java编写的计算器程序及源代码 - 编程入门网
作者 佚名技术
来源 NET编程
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发布时间 2012-06-20
| ttonMul || temp == buttonDiv) && clickable == true) { //''+''操作 if (temp == buttonAdd) { switch (prekey) { case 0: answerd += Double.parseDouble(textAnswer.getText()); break; case 1: answerd -= Double.parseDouble(textAnswer.getText()); break; case 2: answerd *= Double.parseDouble(textAnswer.getText()); break; case 3: if (Double.parseDouble(textAnswer.getText()) == 0) { textAnswer.setText("除数不能为零"); clickable = false; } else answerd /= Double.parseDouble(textAnswer.getText()); break; default: answerd = Double.parseDouble(textAnswer.getText()); } textAnswer.setText(""); prekey = key = 0; } //''-''操作 if (temp == buttonSub) { switch (prekey) { case 0: answerd += Double.parseDouble(textAnswer.getText()); break; case 1: answerd -= Double.parseDouble(textAnswer.getText()); break; case 2: answerd *= Double.parseDouble(textAnswer.getText()); break; case 3: if (Double.parseDouble(textAnswer.getText()) == 0) { textAnswer.setText("除数不能为零"); clickable = false; } else answerd /= Double.parseDouble(textAnswer.getText()); break; default: answerd = Double.parseDouble(textAnswer.getText()); } textAnswer.setText(""); prekey = key = 1; } //''*''操作 if (temp == buttonMul) { switch (prekey) { case 0: answerd += Double.parseDouble(textAnswer.getText()); break; case 1: answerd -= Double.parseDouble(textAnswer.getText()); break; case 2: answerd *= Double.parseDouble(textAnswer.getText()); break; case 3: if (Double.parseDouble(textAnswer.getText()) == 0) { textAnswer.setText("除数不能为零"); clickable = false; } else answerd /= Double.parseDouble(textAnswer.getText()); break; default: answerd = Double.parseDouble(textAnswer.getText()); } textAnswer.setText(""); prekey = key = 2; } //''/''操作 if (temp == buttonDiv) { switch (prekey) { case 0: answerd += Double.parseDouble(textAnswer.getText()); break; case 1: answerd -= Double. |
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