Java Reflection - Field.canAccess() Examples

package com.logicbig.example.field;

import java.lang.reflect.Field;

public class CanAccessExample {
    private static class Test {
        private int number;
    }

    public static void main(String... args) throws NoSuchFieldException {
        Field f = Test.class.getDeclaredField("number");
        Test testInstance = new Test();
        boolean b = f.canAccess(testInstance);
        System.out.println(b);
        if(!b){
            f.setAccessible(true);
            System.out.println(f.canAccess(testInstance));
        }
    }
}

package com.logicbig.example.field;

import java.lang.reflect.Field;

public class CanAccessExample2 {
    private int number;
    private static String str;

    public static void main(String... args) throws NoSuchFieldException {
        Field f = CanAccessExample2.class.getDeclaredField("number");
        System.out.println(f.canAccess(new CanAccessExample2()));
        //static field
        Field f2 = CanAccessExample2.class.getDeclaredField("str");
        System.out.println(f2.canAccess(null));
    }
}