Get array name and type

 
import java.awt.Button;
import java.awt.TextField;
import java.lang.reflect.Field;

public class SampleArrayReflection {

  public static void main(String[] args) {
    KeyPad target = new KeyPad();
    printArrayNames(target);
  }

  static void printArrayNames(Object target) {
    Class targetClass = target.getClass();
    Field[] publicFields = targetClass.getFields();
    for (int i = 0; i < publicFields.length; i++) {
      String fieldName = publicFields[i].getName();
      Class typeClass = publicFields[i].getType();
      String fieldType = typeClass.getName();
      if (typeClass.isArray()) {
        System.out.println("Name: " + fieldName + ", Type: "
            + fieldType);
      }
    }
  }
}

class KeyPad {

  public boolean alive;

  public Button power;

  public Button[] letters;

  public int[] codes;

  public TextField[] rows;

  public boolean[] states;
}