Java Reflection - Java Field.setDouble(Object obj, double d)


Field.setDouble(Object obj, double d) has the following syntax.

public void setDouble(Object obj,  double d)  throws IllegalArgumentException ,   IllegalAccessException


In the following code shows how to use Field.setDouble(Object obj, double d) method.

import java.lang.reflect.Field;
//from   w  w w.j  a v a2 s .  com
class MyClass {
  public double i = 1.123;

public class Main {
  public static void main(String[] args) throws Exception {
    Class<?> clazz = Class.forName("MyClass");
    MyClass x = (MyClass) clazz.newInstance();

    Field f = clazz.getField("i");
    f.setDouble(x, 9.99);


The code above generates the following result.