/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
static class MyClass<M extends MyClass<M>> {
    int i = 0;
 
    public M self() {
      return (M) this;
    }
 
    public M increment() {
        i++;
        return self();
    }
}
 
static class MySubClass extends MyClass<MySubClass> { }
 
 
	public static void main (String[] args) throws java.lang.Exception
	{
		MySubClass m = new MySubClass().increment();
	}
}

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