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Java Reflection - Field.get() Examples

[Last Updated: Nov 8, 2025]

Java Reflection Java Java API 

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'

Class:

java.lang.reflect.Field

java.lang.Objectjava.lang.Objectjava.lang.reflect.AccessibleObjectjava.lang.reflect.AccessibleObjectjava.lang.reflect.AnnotatedElementAnnotatedElementjava.lang.reflect.Fieldjava.lang.reflect.Fieldjava.lang.reflect.MemberMemberLogicBig

Method:

public Object get(Object obj)
           throws IllegalArgumentException,
                  IllegalAccessException

Returns the value of the field represented by this Field , on the specified object. The value is automatically wrapped in an object if it has a primitive type.


Examples


package com.logicbig.example.field;

import java.lang.reflect.Field;
import java.math.BigDecimal;

public class GetExample {
    private String aString = "an instance string";
    private int anInt = 10;
    private static BigDecimal anObj = BigDecimal.TEN;

    public static void main(String... args) throws NoSuchFieldException, IllegalAccessException {
        Field field = GetExample.class.getDeclaredField("aString");
        GetExample instance = new GetExample();
        Object o = field.get(instance);
        System.out.println(o);

        //primitive instance field
        Field field2 = GetExample.class.getDeclaredField("anInt");
        Object o2 = field2.get(instance);
        System.out.println(o2.getClass().getTypeName());
        System.out.println(o2);

        //static field
        Field field3 = GetExample.class.getDeclaredField("anObj");
        Object o3 = field3.get(null);
        System.out.println(o3.getClass().getTypeName());
        System.out.println(o3);
    }
}

Output

an instance string
java.lang.Integer
10
java.math.BigDecimal
10

See Also