Eval

import java.lang.reflect.Field;

public class Eval {
  public final int a = 1;
  @SuppressWarnings("unused")
  private final String b = "abc";
  @SuppressWarnings("unused")
  private final int c = 100;
  @SuppressWarnings("unused")
  private final String d = "def";

  public static void main(String[] args) {
    Eval eval = new Eval();
    for (Field f : eval.getClass().getDeclaredFields()) {
      if (f.getType().equals(int.class)) {
        int val = 0;
        try {
          val = f.getInt(eval);
        } catch (IllegalArgumentException | IllegalAccessException e) {
          e.printStackTrace();
        }
        System.out.println(f.getName() + " = " + val);
      } else if (f.getType().equals(String.class)) {
        String val = "";
        try {
          val = (String) f.get(eval);
        } catch (IllegalArgumentException | IllegalAccessException e) {
          e.printStackTrace();
        }
        System.out.println(f.getName() + " = " + val);
      }
    }
    Field g = null;
    try {
      g = eval.getClass().getField("a");
    } catch (NoSuchFieldException | SecurityException e) {
      e.printStackTrace();
    }
    int v = 0;
    try {
      v = g.getInt(eval);
    } catch (IllegalArgumentException | IllegalAccessException e) {
      e.printStackTrace();
    }
    System.out.println(g.getName() + " = " + v);
  }
}