JCalculator

你可以评估一些数学表达式输入表达式进行评估，然后按计算按钮。复制并粘贴到其他应用程序的结果。结果可以恢复以来计算历史存储在组合框中。

You can evaluate some mathematical expressions by entering an expression to be evaluated and pressing the CALCULATE button.  Copy and paste the results to the other application. The results could be revived since the calculation history is stored in the combo box.