Problem printing inside FOR loop

[cassysumandak]

Hi, I have problem printing inside the FOR loop.
After the first two FOR loop, this method stop reading the next line. How can I solve this problem. This is strange.

	private int spacing() {
		int n = numberOfTriangles();
		
		ArrayList<Double> list_Xs1 = new ArrayList<Double>(); 
		ArrayList<Double> list_Ys1 = new ArrayList<Double>(); 

		for(Polygon p:triangles){
			double cX = p.xpoints[0];
			double cY = p.ypoints[2];
			list_Ys1.add(cY);
			list_Xs1.add(cX);
		}

		//Remove duplicate key in X	
		HashSet<Double> hashSet_list_Xs1= new HashSet<Double>(list_Xs1);
		ArrayList<Double> list_Xs2	= new ArrayList<Double>(hashSet_list_Xs1);
		Collections.sort(list_Xs2);

		//Remove duplicate key in Y	
		HashSet<Double> hashSet_list_Ys1= new HashSet<Double>(list_Ys1);
		ArrayList<Double> list_Ys2	= new ArrayList<Double>(hashSet_list_Ys1);
		Collections.sort(list_Ys2);
				
		ArrayList<Double> list_Xs3 = new ArrayList<Double>(); 
		ArrayList<Double> list_Ys3 = new ArrayList<Double>(); 
		double distanceX = 0.0,distanceY=0.0;

		//Get Distance between X coordinate
		for (int j=0; j<list_Xs2.size(); j++){
			distanceX = Math.abs(list_Xs2.get(j) - list_Xs2.get(j+1));
			list_Xs3.add(distanceX);
			System.out.println("I am able to print everything inside this loop");
		}
		
		System.out.println("This is not printed");

		//Get Distance between Y coordinate		
		for (int i=0; i<list_Ys2.size(); i++){
			distanceY = Math.abs(list_Ys2.get(i) - list_Ys2.get(i+1));
			list_Ys3.add(distanceY);
			System.out.println("Nothing printed in this loop");
		}

		//Remove duplicate key in Y	
		HashSet<Double> hashSet_list_Ys2= new HashSet<Double>(list_Ys3);
		ArrayList<Double> list_Ys4 	  	= new ArrayList<Double>(hashSet_list_Ys2) ;
		
		//Remove duplicate key in X	
		HashSet<Double> hashSet_list_Xs2 = new HashSet<Double>(list_Xs3);
		ArrayList<Double> list_Xs4 	  = new ArrayList<Double>(hashSet_list_Xs2) ;
		
		int distinctDistance_Xs = list_Xs4.size(); 
		int distinctDistance_Ys = list_Ys4.size(); 

		
		int nSpacing = distinctDistance_Xs + distinctDistance_Ys;

		int RMspacing=0;
		if (n==1)
			RMspacing = 1;
		else if (n != 1)
			RMspacing = 1 - ((nSpacing-1)/(2*(n-1)));
		
		return RMspacing;
	}

[cassysumandak]

never mind..I solved the problem by adding -1

for (int j=0; j<list_Xs2.size()-1; j++){
....
}
for (int i=0; i<list_Ys2.size()-1; i++){
....
}