Generify Refactoring

The Generify refactoring is designed to transform existing code that does not use Generics, into the Generics-aware code. The refactoring analyzes existing code, and for each raw type creates safe and consistent parameter type.

IntelliJ IDEA tries to generate code, which is as correct as possible from the Java point of view. In other words, each context introduces some type restrictions, and the refactoring produces the best possible type, that does not contradict to the existing contexts.

public void method() {
    List list = new LinkedList();
    list.add("string");
}
    

public void method() {
    List<String> list = new LinkedList<String>();
    list.add("string");
}