VarNames.java

package varnames;

/**
 * Characters you can use in java identifiers... for good practice...
 */
public class VarNames {

  public static void main(String[] args) throws Exception {
    for (int i = Character.MIN_CODE_POINT; i <= Character.MAX_CODE_POINT; i++)
      if (Character.isJavaIdentifierPart(i) && !Character.isAlphabetic(i))
        System.out.println((char) i);
  }
}