Hi there. I'm a java programming novice and learning to read from text file and use the data in the text file to display some images. I think that i have made some silly mistakes. I can compile the program but when i try to run it, the following message appears in the console:

			

			... java.lang.NullPointerException
			

			at LightbarPanel1.
			(LightbarPanel1.java:41)
			

			...
			

			

			Can you please have a look of the pieces of my code below and tell me what's wrong with it?
			

			

			...
			

			

			String line1, line2, line3, file1 ="lenses1.txt", file2 ="chassis.txt", file3="rotator.txt";
			

			String[] endLeftName,endLeftFName, endLeftChassisName, endLeftChassisFName;
			

			String[] endRightName, endRightFName, endRightChassisName, endRightChassisFName;
			

			String[] rotator;
			

			StringTokenizer tokenizer1, tokenizer2, tokenizer3;
			

			

			

			public LightbarPanel1(){
			

			

			MediaTracker tracker = new MediaTracker(this);
			

			try{
			

			FileReader fR1 = new FileReader (file1);
			

			BufferedReader bR1 = new BufferedReader(fR1);
			

			

			

			

			

			line1 = bR1.readLine();
			

			while(line1 != null)
			

			{ int i=0;
			

			tokenizer1 = new StringTokenizer(line1);
			

			endLeftName[i++] = new String(tokenizer1.nextToken());// line 41
			

			System.out.println(i);
			

			System.out.println(i+1f);
			

			endLeft[i++] = Toolkit.getDefaultToolkit().getImage(endLeftName[i++]);
			

			//endLeftFName[i++] = new String(tokenizer1.nextToken());
			

			//endLeftF = Toolkit.getDefaultToolkit().getImage(endLeftFName[i++]);
			

			endRightName[i++] = new String(tokenizer1.nextToken());
			

			endRight[i++] = Toolkit.getDefaultToolkit().getImage(endRightName[i++]);
			

			endRightFName[i++] = new String(tokenizer1.nextToken());
			

			endRightF[i++] = Toolkit.getDefaultToolkit().getImage(endRightFName[i++]);
			

			line1 = bR1.readLine();
			

			

			

			}
			

			

			bR1.close();
			

			...
			

		

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