Method investigation in Eclipse - How to find out which classes call this particular method?

Question

say I have Class1 that implements interface named Class1interface .

This interface is autowired via dependency injection and IoC into another class - name it Class2 . Class2 uses SOME of the methods provided by Class1interface .

Say we use Spring notation:

class Class2 {
   @Autowired 
   Class1interface;
   // methods calls of Class1interface and application logic
}

How can I find out which methods of Class1interface/Class1 are used in Class2 without scrolling through the screen? Or how can I check whether this particular Class1interface method is used in Class2?

I know dodgy explanation, but I tried my best.

Thank You,

Answer 1

ctrl + shift + G while the cursor is on a method will show references to that method. This won't get you a pretty report of class relationships, but you could look through the results of Class1.blah to see which methods in Class2 reference it.

Answer 2

If you mean at runtime, you'd have to use reflection to pull the list of methods.

Method[] list1 = Class1.class.getMethods();
Method[] list2 = Class2.class.getMethods();
//Your code to compare the lists here

If you mean dev environment, go with the answer by @digitaljoel

Answer 3

可能是将光标放在字段引用上时可以使用“ Ctrl + shift + U”，您应该能够看到该类中字段引用的用法。

Answer 4

• If you click on the field, all references to it are highlighted automatically. You see them as small rectangles at the right side of the code; you can click them to get to the position where the field is used.
• Search > Occurences in File > Identifier gives you a list of all access to the field.

Answer 5

This is not the exact solution, but might be of help:

Place the cursor over any field or method and press <Ctrl> + <Alt> + <H> , which will give you the call hierarchy. This still means that you have to check for each method in Class1 / Interface1