How do I create a variable name on the fly?

Question

Hi,
If I have a String containing a value, how do I create a variable name using that value during program execution? That is if I have
String fred = "newvar";
How do I then create a new String with the name "newvar" (using the contents of fred)? I will never know what the content of fred is until this point. What I'd like to be able to do is something like
String fred.subString(0) = "a new value";
Obviously this won't work but if it did the statement would evaluate to something like
String newvar = "a new value";
Appreciate any help you can give,
Dave.

Answer 1

Here u go:
   private JCheckBox AddCheckBox( String strText, int nTextID )
      JCheckBox checkbox = null;
      Class checkboxDefinition;
      Class[] stringArgsClass = new Class[] {String.class};
      Constructor stringArgsConstructor;
      Object[] stringArgs = null;
      String arg = "";
      arg = "CheckBox" + nTextID;
      String label = new String(arg);
      stringArgs = new Object[] {label};
      try
        checkboxDefinition = Class.forName("javax.swing.JCheckBox");
        stringArgsConstructor = checkboxDefinition.getConstructor(stringArgsClass);
        checkbox = (JCheckBox) createObject(stringArgsConstructor, stringArgs);
        checkbox.setName(label);
        checkbox.setText(strText);
        checkbox.setSize(new java.awt.Dimension(CQuestionBase.PAGEWIDTH, 21));
        checkbox.putClientProperty("1",new Integer(nTextID));
        checkbox.setVisible(true);
      catch (ClassNotFoundException e)
        System.out.println(e);
      catch (NoSuchMethodException e)
        System.out.println(e);
      return checkbox;
   }This code was based on an example I found about two years ago. You can use the same methodolgy to create objects of any kind. Again, look at java.lang.Reflect.