Get no static field nor final field form an object by appointing field name, it search form all declared fields including private protected and public field - Java Reflection

Java examples for Reflection:Field Get

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Description

Get no static field nor final field form an object by appointing field name, it search form all declared fields including private protected and public field

Demo Code


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

public class Main {
    public static void main(String[] argv) throws Exception {
        Object obj = "java2s.com";
        System.out.println(java.util.Arrays
                .toString(getNoStaticNorFinalFieldArray(obj)));
    }//from  w ww .  j  a va 2s  .co  m

    /**
     * Get no static field nor final field form an object by appointing field name, it search form all declared fields
     * including private protected and public field
     * @param obj the object to fetch fields
     * @return Field array
     */
    public static Field[] getNoStaticNorFinalFieldArray(Object obj) {
        return getNoStaticNorFinalFieldArray(obj.getClass());
    }

    public static Field[] getNoStaticNorFinalFieldArray(Class<?> c) {
        return getNoStaticNorFinalFieldList(c).toArray(new Field[] {});
    }

    /**
     * Get no static field nor final field form an object by appointing field name, it search form all declared fields
     * including private protected and public fields
     * @param obj the object to fetch field
     * @return Field list
     */
    public static List<Field> getNoStaticNorFinalFieldList(Object obj) {
        return getNoStaticNorFinalFieldList(obj.getClass());
    }

    public static List<Field> getNoStaticNorFinalFieldList(Class<?> c) {
        Field[] fields = c.getDeclaredFields();
        List<Field> nostaticFieldList = new ArrayList<Field>();
        for (Field field : fields) {
            field.setAccessible(true);
            if (!Modifier.isStatic(field.getModifiers())
                    && !Modifier.isFinal(field.getModifiers())) {
                nostaticFieldList.add(field);
            }
        }
        return nostaticFieldList;
    }
}

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