Code generation for composition using Eclipse

Question

Effective Java , along with other sources suggest that we should consider using composition over inheritance . I have often found my self achieving such composition by using the Decorator pattern and implementing forwarding methods that delegate invocations to a wrapped object.

However, I often find myself writing many simple forwarding methods of the type:

public void myMethod(String name) {
    instance.myMethod(name);
}

Is there anyway of auto-generating these forwarding methods within Eclipse (3.4.x)?

Answer 1

In the Source menu choose "Generate Delegate Methods". It will give you a list of methods available on any of your fields that you can have the current object forward to.

Answer 2

您可以编写一个自定义模板（“模板”上的“窗口”>“首选项”>“过滤器”），该模板具有方法名称和参数名称的占位符。