Section: Windows or Linux

Extract constant

Last modified: 29 November 2022

The Extract Constant refactoring makes your source code easier to read and maintain. It also helps you avoid using hardcoded constants without any explanations about their values or purpose.

Example

Let's introduce a constant for the expression "string" that occurs twice throughout code.

public class Class {
    public void method() {
        ArrayList list = new ArrayList();
        list.add("string");
        anotherMethod("string");
    }

    private void anotherMethod(String string) {
    }
}