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  1. class StopSelfRecursion {
  2.  
  3.    // base class
  4.    static class Class1<Self extends Class1<Self,T>, T> {
  5.       public Self getMyself() {
  6.          return (Self) this;
  7.       }
  8.    }
  9.  
  10.    // derived 1
  11.    static class Class2<Self extends Class2<Self, T>, T> extends Class1<Self, T> {
  12.    }
  13.  
  14.    // derived 2
  15.    static class Class3<Self extends Class2<Self, T>, T> extends Class2<Self, T> {
  16.    }
  17.  
  18.    // want to stop recursion; want Class4 has only one parameter
  19.    static class Class4<T> extends Class3<Class4<T>, T> {
  20.    }
  21.  
  22.    public static void main(String[] args) {
  23.  
  24.       Class1<?, Integer> v1 = new Class1<>();
  25.  
  26.       Class2<?, Integer> v2 = new Class2<>();
  27.  
  28.       Class3<?, Integer> v3 = new Class3<>();
  29.  
  30.       System.out.println(v1.toString());
  31.       System.out.println(v2.toString());
  32.       System.out.println(v3.toString());
  33.  
  34.  
  35.    }
  36. }
Success #stdin #stdout 0.04s 711168KB
comments (?)
stdin 
Standard input is empty
stdout 
StopSelfRecursion$Class1@10dea4e
StopSelfRecursion$Class2@647e05
StopSelfRecursion$Class3@1909752
https://ideone.com/x8CL7n
language:
Java (12.0.1)
created:
9 years ago
visibility:
public

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