Retrieve the parameters in this method in idea for our use -- 1. Class diagram. 2. Double click shift

Have a problem

When we don't use a certain method for a long time , You will forget which parameters should be filled in this method , Is it one or two ？ Or fill in int still String？
Then we need to retrieve all the fillable parameters of this method at this time , To identify which method and which parameters I need to use

Try to solve

1. Use the class diagram pattern to observe , We need to know which class this method belongs to , such as substring Method belongs to String class

Let's right-click Diagrams——Show Diagrams

Click on methods You can see that String Class

2. double-click shift Method retrieval , You can also retrieve , However, I don't feel that class diagram retrieval is professional and detailed
   

resolvent

1. Class diagram mode , Not only can you view all methods , You can also view the constructors in the class , However, you need to know which class the retrieval method belongs to
2. double-click shift, Not only can you search jdk System approach , You can also retrieve user methods

double-click shift Retrieval system method

We can also click in to view the method source code , Analyze the function of this method

double-click shift Retrieve user methods

double-click shift