1. Refactoring Classes
2. Generate Constructors
3. Change Method Signature
4. Find Usage
5. Extract Field

Refactoring Classes

• Click Refactoring (control + T)

• Click Refactor this...

• Click Move

• Name a new class name, and change the visibility of this new class:

• Click Yes to create a new class:

Generate Constructors

• Click Code
• Click Generate (command + N)
• Select Constructor
• A constructor with three parameters will be created:

• The constructor looks like this: (those three signatures are fields of the class)

  

Change Method Signature

• Click Refactoring (control + T)
• Click Refactor this...
• Click Change Signature
• Then one can add or delete signatures

Find Usage

• Right click the targeted class/method name
• Click Find Usages

Extract Field

• Click Refactoring (control + T)
• Click Refactor this...
• Click Field
• Can choose to initialize it in a constructor and replace all occurrences