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Thread: Null

  1. #1
    leapinlizard is offline Member
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    Default Null

    Hi, This code is fine no error but when i run this program all i get this output:
    null null null null null null
    null null null null null null
    null null null null null null
    null null null null null null


    Java Code:
    public class examp
    {
    
    		static String bookArray[] = new String[5];
    		static String dataArray[][] = new String [5][6];
    
    	public static void main(String args[])
    	{
    		//String bookArray[] = new String[5];
    		//buildInstances();
    		
    		
    		//printReport(dataArray[k][0]);
    		  printReport();
    
    	 }//main
    
    		public static void buildInstances()
    		{	
    
    		 String dataArray[][] = {{"HELLO"," MY NAME"," IS"," Alex"," king","jadu"},
    					{"HELLO"," THIS IS"," SE"," LIN"," SECOND","jadu"},
    					{"HELLO"," DO U ST"," LL"," REM"," EMBER ","jadu"},
    					{"HELLO"," 4TH LIN"," IN"," PRO"," GRESS ","jadu"},
    					{"HELLO"," DOWNTOW"," N "," HUH"," HELLO ","jadu"}};
    
    		}
    					
    
    		public static void printReport()
    		{
    		
    		for (int i=0; i<bookArray.length; i++)
    		{
    		   System.out.println(dataArray[i][0]+dataArray[i][1]+dataArray[i][2]+dataArray[i][3]+dataArray[i][4]+dataArray[i][5]);
    //,dataArray([i][1]), dataArray([i][2]),dataArray([i][3]),dataArray([i][4]));
    		}
    
    
    		}//print report
    
    //	} //main
    }

  2. #2
    CJSLMAN's Avatar
    CJSLMAN is offline Moderator
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    Default Does bookArray have any data?

    Question: in your code, when did you put data in bookArray?

    Luck,
    CJSL
    Chris S.
    Difficult? This is Mission Impossible, not Mission Difficult. Difficult should be easy.

  3. #3
    leapinlizard is offline Member
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    Default

    so ok how do i put this in bookArray i'm so confuse
    Java Code:
    bookArray[i] = dataArray[i][0]+dataArray[i][1]+dataArray[i][2]+dataArray[i][3]+dataArray[i][4]+dataArray[i][5];
    ??

  4. #4
    leapinlizard is offline Member
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    Default

    yeah i made one sample file to trace the problem but still no luck

  5. #5
    OrangeDog's Avatar
    OrangeDog is offline Senior Member
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    Default

    As you've commented out the method call, none of your arrays ever have anything assigned to them.
    Don't forget to mark threads as [SOLVED] and give reps to helpful posts.
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