File I/O Issue

Question

Hi there,
I've been trying to write a small program that extracts information from a txt file and then sorts it based on which information it might contain.
It should read a line from the file and then extra a chemical name and a CAS number, then it decided whether this chemical name is designated as a certain type of hazardous material.
When my program reads the txt file it only gets to one line before it thows a "NoSuchElementException".
Here is a bit of the code that I made:
Scanner in = new Scanner(new FileReader("fullList.txt"));
PrintWriter outACGIH = new PrintWriter(new FileWriter("sortedACGIH.txt"));
PrintWriter outIARC = new PrintWriter(new FileWriter("sortedIARC.txt"));
String inLineBefore = in.nextLine();
String CAS = "";
String ChemName = "";
String notation = "";
     do
          String writeMeACGIH = "";
                boolean containsACGIH = false;
                String writeMeIARC = "";
          boolean containsIARC = false;
               //Some logic to determine hazardous components
          if(containsACGIH)
               outACGIH.println(writeMeACGIH);
          if(containsIARC)
               outIARC.println(writeMeIARC);
             inLineBefore = in.nextLine();
     }while(inLineBefore != "END OF FILE");The program is not writing anything to files, all that I have noticed it doing so far is just reading the first line (from the top bit) and then throwing the exception.
The last line in the txt file says END OF FILE
Any insight as to why I am getting this exception.

Answer 1

you have to use String.equals()
String a = "ab";
String a2 = new String("a") + "b";
a.equals(a2);