Difference in the code

import java.util.*;
import java.io.*;
public class getdata {
	  public static void main(String []args){
		  try{
		
			  ArrayList a=new ArrayList();
			  File testfile = new File("D:\\test.txt");
			  Scanner test=new Scanner(testfile);
			  int notcount=0;
			  int goodcount=0;
			  int badcount=0;
		  File file1 = new File("D:\\good.txt");
		  Scanner goodFile = new Scanner (file1);
		 File file2 = new File("D:\\Bad.txt");
		  Scanner badFile=new Scanner(file2);
		  test.useDelimiter(" ");
		  while(test.hasNext()){
			  String text=test.next();
			  if(text.equals("not")){
				  notcount++;
			  }
			  a.add(text);
		  }
		  badFile.useDelimiter(",");
          while(badFile.hasNext())
          {
        	  String word=badFile.next();
        	  for(int i=0;i<a.size();i++){
             
              if(word==a.get(i))
              {
            	  badcount++;
              }
          }
        	 }
		  
		  
          
          goodFile.useDelimiter(",");
          while(goodFile.hasNext())
          {
        	  String word=goodFile.next();
        	  for(int i=0;i<a.size();i++){
             
              if(word.equals(a.get(i)))
              {
            	  goodcount++;
              }
          }
        	 }
          if(notcount==1){
        	  if(goodcount!=0){
        		  goodcount=goodcount-1;
        		  badcount=badcount+1;
        	  }
        	  else
        		  if(badcount!=0){
        			  badcount=badcount-1;
        			  goodcount=goodcount+1;
        		  }
          }
          
          
          
          System.out.println("negative remarks"+badcount);
          System.out.println("positive remarks"+goodcount);
	  }
		  catch(IOException e){
			  System.out.println("File not found");
			  }
		  }
	  }