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Commands provided by jde-usages

  • Usage related commands:

    • M-x jde-usages-display-call-tree
      JDEpi→jde-usages→Usages/Callers for→method or field definition at point

      Displays an interactive call tree of the locations where the current method declaration is called.

      If called if a prefix argument, this command will not display usages where the class of the called object is not the exactly the same as the original class.

    • M-x jde-usages-display-call-tree-for-thing-at-point
      JDEpi→jde-usages→Usages/Callers for→Method call or field reference at point

      Uses JDEE's completion mechanism to try to figure out the class of the method call at point, and then displays usages for this method signature. Since there may be multiple methods with the same name and the types of the parameters to this method cannot be easily computed, this command only searchs for method calls with the same number of paramters as this one. This may return extra results. If you have "foo(int,int)" and "foo(String,String)" defined for a class, when point is at a call like "foo (1,1);" jde-usages-display-call-tree-for-thing-at-point will find usages of both methods combined.

    • M-x jde-usages-display-call-tree-for-specified-class
      JDEpi→jde-usages→Usages/Callers for→method or field specified interactively

      Lets you enter a class name, a method name and the number of parameters it takes, and will find all usages for such a method. The defaults for these fields are the current class name (as returned by jde-usages-get-current-class), the method "<init>" which is the name of the class constructor and 0. So accepting the defaults will result in a search for all places the default constructor for this class is called.

    When searching for usages of a method the above commands will also display calls made using relevant super and sub classes of the original class. Prefixing the above commands with C-u will force a search for calls only to the orginal class.

    	    01      class A { void foo() {} }
    	    03      class B extends A  { void foo() -!- {} }
    	    05      class C extends B  { }
    	    07      class D extends C  { void foo() {} }
    	    09      {
    	    10         B b = new C();
    	    11         A a = b;
    	    12         C c = (C)b;
    	    13         D d = new D();
    	    15         a.foo();
    	    16         b.foo();
    	    17         c.foo();
    	    18         d.foo();
    	    19     }

    If "-!-" indicates where point is, the command JDEpi→jde-usages→Usages→for method defn at point will show usages on lines 15, 16 and 17. Prefixing this command with "C-u" will result in only line 16 showing up in the usages. Note that in either case line 18 is not listed as a usage: since D overrides the defintion of foo(), a call to the method foo of an object of type D will execute the method defined on line 07 and not line 03.

  • Class tree commands:

    • jde-usages-display-subs-and-implementers
      JDEpi→jde-usages→Inheritance trees→Subtypes

      This command displays a tree of all the subclasses for a class. For an interface all the implementing classes and all subinterfaces are shown.

    • jde-usages-display-superclasses
      JDEpi→jde-usages→Inheritance trees→Supertypes

      This command displays a tree of all the superclasses and implemented interfaces a class.

    • jde-usages-display-type-hierarchy
      JDEpi→jde-usages→Inheritance trees→Type Hierarchy

      This command displays all the superclasses and implemnted interfaces and superinterfaces for a class.

    In the class trees displayed by these commands, class names that have an "(I)" next to their names are interfaces, while abstract classes are distinguised by an "(A)".

  • M-x jde-usages-display-subs-implementing-method
    JDEpi→jde-usages→Misc→Classes overriding/implementing this method

    Shows you all the locations where the current method is overridden or implemented.

  • M-x jde-open-class-source-with-completion
    JDEpi→jde-usages→Misc→Open class (with name completion)

    A wrapper around jde-open-class-source which provides class-name completion. The list of classes in the project is updated automatically.

  • M-x jde-usages-locate-class
    JDEpi→jde-usages→Misc→Locate class

    Find the jar or directory in jde-global-classpath that the entered class-name is located in.

  • M-x jde-usages-next-pos

    Browses to the next entry in the *usages* buffer. Can be called from any buffer.