Replace constructor with factory method

Last modified: 11 February 2024

| Replace constructor with factory method

This refactoring is available only as an intention action.

The Replace Constructor With Factory Method refactoring lets you hide a constructor and replace it with a static method which returns a new instance of a class.

Example

Before

After

// File Class.java
public class Class {
    public Class(String s) {
        ...
    }
}

// File AnotherClass.java
public class AnotherClass {
    public void method() {
        Class aClass = new Class("string");
    }
}
// File Class.java
public class Class {
    private Class(String s) {
        ...
    }
    public static Class createClass(String s) {
        return new Class(s);
    }
}

// File AnotherClass.java
public class AnotherClass {
    public void method() {
        Class aClass = Class.createClass("string");
    }
}

Replace constructor with factory method dialog

This dialog appears when you invoke the Replace constructor with factory method refactoring.

Item

Description

Factory method name

Specify here the name for the factory method.

In (fully qualified name)

Specify here the class, where the method will be created.

See also

Refactoring