WebSolve the following exercise: 1. Use the following Java code to answer the following: to. Correct the errors that it has b. Add required statements, routines, or modules c. Explain the logic of the program and how it works WebApr 6, 2016 · getActionCommand () Returns the command name of the action event fired by this button. If the command name is null (default) then this method returns the label of the button. 依赖于按钮上的字符串 getSource得到的组件的名称,而getActionCommand得到的是标签。 如:Button bt=new Button ("buttons"); 用getSource得到的是bt 而 …
Java Implementing Negative/Positive button State machine calculator
WebCheck the event source in actionPerformed method: 15.5.4. Use an Inner Class to handle the event: 15.5.5. Use one inner class to handle events from two buttons: 15.5.6. Get … WebTo get the action command from an action event, call the event’s getActionCommand () method. The following code checks whether the user pressed the button labeled Yes: public void actionPerformed(ActionEvent e) { if (e.getActionCommand().equals("Yes") { //the user pressed "Yes"; do something ... } } Yes is a string, not a command per se. aliante cvs
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Webevent driven program in java; DP_Applications; code for scientific calculator in java; program for scientific calculator in java; Scientific calculator java program; coding of scientific calculator in java; java program to make a scientific calculator; how to make a scientific calculator in java; scientific calculator in java code WebSep 5, 2024 · The getActionCommand() method from the ActionListener class identifies a button. When there are multiple buttons, the getActionCommand() gives us an easy way … WebcalField.setField (event.getActionCommand ()); Now, you might need to add in some if statements for special keys, like = and clear, but all the other numeric buttons, only need to do the above, this should greatly reduce the repeated code and make maintaining the code easier Share Improve this answer Follow edited Oct 22, 2015 at 21:01 aliante dg300