testsupersub.java

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class SuperClass {
    private int n;
  	
  	/*
    SuperClass() {
        System.out.println("SuperClass()");
    }
    */
    
  
    SuperClass(int n) {
        System.out.println("SuperClass(" + n + ")");
        this.n = n;
    }
}

class SubClass extends SuperClass {
    private int n;
    
    SubClass(int n) {
    		//super();
        System.out.println("SubClass(" + n + ")");
        this.n = n;
    }
    
    SubClass() {
    		super(300);
        System.out.println("SubClass()");
    }
}

public class TestSuperSub {
    public static void main(String arg[]) {
        //SubClass sc1 = new SubClass();
        SubClass sc2 = new SubClass(400);
    }
}