Thread: Java land null point exception

Hello,

I am a beginner of java. I wrote this code. When I run it in eclipse, I get an error: java lang null point exception. It does not tell me which line I have wrong code. Please advise on how to fix it.

            int  TotalCol;
            int  TotalRow;
 
            TotalCol = 0;
            TotalRow = sheet.getLastRowNum();
            TotalCol = sheet.getRow(0).getLastCellNum();
   	        System.out.println("row " + TotalRow +  " col " +  TotalCol);
 
            int resultcol = 0;
	    	for(int col = 0;col<=TotalCol;col++){
 
	    	     HSSFRow row1 = sheet.getRow(0);
	    	     System.out.println("column names " + row1.getCell(col).toString() );
	    	 	if("result".equalsIgnoreCase(row1.getCell(col).toString().trim()))
				{
	    	 		resultcol = col;
		    	     System.out.println("result column number " + resultcol );
 
				}
 
	    	}

I get an error: java lang null point exception

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