Constructors and Keyword 'this'
===

I have a syntax error and I don't Know how to fix it. The code appears correct to me, but Eclipse is telling me that "Constructor call must be the first statement in a 
     constructor" at the methods `setName()` and `setAge()`
    
    public class KeywordThis {

	
	private String name;
	private int age;
	
	public KeywordThis(){
		
		this.name = "NULL";
		this.age = 0;
		
	}
	
	public KeywordThis(String s, int a){
		
		this.name = s;
		this.age = a;
		
	}
	
	public KeywordThis(String s){
		
		this.name = s;		
	}
	
    public KeywordThis(int a){
		
		this.age = a;
		
	}
	
	public int setAge(int a){
		
		this(a);
	}

	public String setName(String s){
		
		this(s);
	}
	
	
	
	
	
	
	public static void main(String args[] ){
		
		
		
		
		
		
		
		
	}
	
	
}


