To create a new variable from an expression:
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Place your cursor on the expression which you would like to replace with a variable.
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Right-click and select Refactor | Extract Variable
-Or- press Alt+Shift+L.
The Extract Local Variable dialog is launched.
Extract Local Variable dialog
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Enter the name of the new variable in the Variable name field.
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Mark the checkbox so that all occurrences of the selected expression will be replaced by references to the local variable.
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Click OK to apply your changes or click Preview if you want to see a preview of the changes that this refactoring will create.
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If you clicked preview a preview window will open with a changes tree showing all the changes which will be made to reflect the extracting of the variable.
Extract Local Variable Preview dialog
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The changes will be listed according to the context within which they appear. You can expand the nodes to see all changes within particular files, classes or functions.
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Use the Next / Previous Change arrows
to scroll
through all possible changes.
Unmarking the checkboxes next to the changes will cause those changes not to take effect. -
Click OK to apply the changes.
The variable will be extracted and the relevant changes made to the code.
