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

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Syntax

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

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

Example

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");
    System.out.println(f.getDouble(x));
    
    f.setDouble(x, 9.99);
    System.out.println(f.getDouble(x)); 

  }
}

The code above generates the following result.

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