method writing

Posted on 2004-04-10
Last Modified: 2010-03-31
Who can help me to think of how to write a method, given an int to it and return a string:

i got a class called sym:

public class sym
       public static final int tCOMMA                        = 6;            // ,
       public static final int tMINUS                        = 7;            // -
       public static final int tDOTS                        = 8;            // ..
       public static final int tSLASH                        = 9;            // /

at another class, i need to build a method, given an int says get_symbol(6), then the method would go to the class above to return the variable whose value is 6 in String.??? This sounds pretty familiar and me but i just somehow stuck~?

Question by:jtcy
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Expert Comment

ID: 10796866
public String getStringValue(int val)
    return Integer.toString(val);

Is this what you mean?

Author Comment

ID: 10796878
not that simple.

the method should go to the sym class and then search for the right String and return that string.
LVL 86

Accepted Solution

CEHJ earned 250 total points
ID: 10796925
You just need to mirror the int constants with an array:

public static final String[] SYMBOLS = { "", "", "", "", "", "", ",", "-", "...", "/" };

String symbol = sym.SYMBOLS[sym.tMINUS]; // 'symbol' contains "-"
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Author Comment

ID: 10796993
CEHJ, that sounds cool but is there any other way to do it? cuz i got longgggg list to add to the array if using this option.
LVL 86

Expert Comment

ID: 10797024
You could read them into an ArrayList from a file:

You could then do:

StringList symbols = new StringList("symbols.txt");

String symbol = (String)symbols.get(sym.tMINUS); // 'symbol' contains "-"


import java.util.ArrayList;

 *  A utility class the allows a text file to be
 *  treated as a collection of Strings
 * @author     CEHJ
 * @created    29 February 2004
  public class StringList extends ArrayList {

  public StringList() {

  public StringList(String fileName) {
    String line = null;
    BufferedReader in = null;
    try {
      in = new BufferedReader(new FileReader(fileName));
      while ((line = in.readLine()) != null) {
    catch (IOException e) {
    finally {
      try {
      catch (IOException e) {
LVL 86

Expert Comment

ID: 10797151

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