Get field value with Reflection « Field « Reflection

Return	Method	Summary
Object	get(Object obj)	Returns field value
boolean	getBoolean(Object obj)	Gets field value as boolean.
byte	getByte(Object obj)	Gets field value as byte.
char	getChar(Object obj)	Gets field value as char.
double	getDouble(Object obj)	Gets field value as double.
float	getFloat(Object obj)	Gets field value as float.
Type	getGenericType()	Returns a Type object that represents the declared type for the field represented by this Field object.
int	getInt(Object obj)	Gets field value as int.
long	getLong(Object obj)	Gets field value as long.
short	getShort(Object obj)	Gets field value as short.


import java.awt.Rectangle;
import java.lang.reflect.Field;

public class Main {

  public static void main(String[] args) {
    Rectangle r = new Rectangle(100, 325);
    Class c = r.getClass();
    try {
      Field heightField = c.getField("height");
      Integer heightValue = (Integer) heightField.get(r);
      System.out.println("Height: " + heightValue.toString());
    } catch (NoSuchFieldException e) {
      System.out.println(e);
    } catch (SecurityException e) {
      System.out.println(e);
    } catch (IllegalAccessException e) {
      System.out.println(e);
    }
  }
}