Get field form an object by appointing field name, it search form all declared fields but not static or final including private protected and public fields - Java Reflection

Java examples for Reflection:Field Get

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Description

Get field form an object by appointing field name, it search form all declared fields but not static or final including private protected and public fields

Demo Code


//package com.java2s;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;

public class Main {
    public static void main(String[] argv) throws Exception {
        Object obj = "java2s.com";
        String name = "java2s.com";
        System.out.println(getNoStaticNorFinalField(obj, name));
    }/*ww  w . java 2  s . c o m*/

    /**
     * Get field form an object by appointing field name, it search form all declared fields but not static or final
     * including private protected and public fields
     * @param obj the object to fetch field
     * @param name field name
     * @return destination
     * @throws NoSuchFieldException
     */
    public static Field getNoStaticNorFinalField(Object obj, String name)
            throws NoSuchFieldException {
        return getNoStaticNorFinalField(obj.getClass(), name);
    }

    public static Field getNoStaticNorFinalField(Class<?> c, String name)
            throws NoSuchFieldException {
        Field[] fields = c.getDeclaredFields();
        for (Field field : fields) {
            field.setAccessible(true);
            if (!Modifier.isStatic(field.getModifiers())
                    && !Modifier.isFinal(field.getModifiers())) {
                if (field.getName().equals(name)) {
                    return field;
                }
            }
        }
        throw new NoSuchFieldException(String.format("No such field: %s",
                name));
    }
}

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