Java Reflection Field Value Set setFieldValue(Class clazz, Object target, String fieldName, Object value)

Description

Set class field value, returns success status

License

Open Source License

Parameter

Parameter	Description
clazz	Class to scan
target	Instance
fieldName	Name of field

Declaration

public static void setFieldValue(Class clazz, Object target, String fieldName, Object value)
        throws NoSuchFieldException, IllegalAccessException 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;

import java.util.*;

public class Main {
    /**/*from  w  ww.j  ava 2  s .co m*/
     * Set class field value, returns success status
     * @param clazz Class to scan
     * @param target Instance
     * @param fieldName Name of field
     */
    public static void setFieldValue(Class clazz, Object target, String fieldName, Object value)
            throws NoSuchFieldException, IllegalAccessException {
        HashMap<String, Object> result = new HashMap<>();
        Field field = clazz.getDeclaredField(fieldName);
        field.setAccessible(true);
        Field modifiersField = Field.class.getDeclaredField("modifiers");
        modifiersField.setAccessible(true);
        modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
        field.set(target, value);
    }
}

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