How do you change a variable name in Java?

How to Rename Variables in Eclipse (Java)

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If you've ever tried to alter a variable's name manually, you'll know that it's a tedious process. In order for the program to compile, all occurrences of the variable must be found and changed to the new name. However, Eclipse makes this task extremely easy by providing a re-factoring tool that automatically finds and updates variable names. The build used here is Eclipse Ganymede 3.4.0.

Steps

  • 1Navigate toHighlight and right click on the variableyou want to rename.Refactorand selectRename....
  • 2Type in your new variable nameand pressEnter.Advertisement
  • 3Verify that occurrences of the variable are updating as you type.
  • 4Check through the source code to ensure that no errors have arisen.Advertisement

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Tips

  • The hotkey for Rename isAlt+⇧ Shift+Rand is much faster than navigating through the menu.
  • If you are on a mac, the hotkey isAlt+⌘ Cmd+R.

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Warnings

  • If there are any syntax errors near occurrences of your variable, those occurrences may not re-factor correctly since Eclipse will not know how to handle the errors. Always check problematic areas after refactoring.

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