example-code/09-pythonic-obj/private/Expose.java at master · ChingweiYu/example-code · GitHub

25 lines (23 loc) · 790 Bytes

import java.lang.reflect.Field;

public class Expose {

public static void main(String[] args) {

Confidential message = new Confidential("top secret text");

Field secretField = null;

try {

secretField = Confidential.class.getDeclaredField("secret");

}

catch (NoSuchFieldException e) {

System.err.println(e);

System.exit(1);

}

secretField.setAccessible(true); // break the lock!

try {

String wasHidden = (String) secretField.get(message);

System.out.println("message.secret = " + wasHidden);

}

catch (IllegalAccessException e) {

// this will not happen after setAcessible(true)

System.err.println(e);

}

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