jdk-24/test/jdk/java/lang/reflect/Field/Set.java

/*
 * Copyright (c) 1999, 2004, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * @test
 * @bug 4250960 5044412
 * @summary Should not be able to set final fields through reflection unless setAccessible(true) passes and is not static
 * @author David Bowen (modified by Doug Lea)
*/

import java.lang.reflect.*;

public class Set {
    public static void main(String[] argv) throws Throwable {
        boolean failed = false;
        Test t = new Test();
        if (!t.testPrimitive()) {
            failed = true; System.out.println("FAILED: testPrimitive()");
        }
        if (!t.testAccessiblePrimitive()) {
            failed = true; System.out.println("FAILED: testAccessiblePrimitive()");
        }
        if (!t.testVolatilePrimitive()) {
            failed = true; System.out.println("FAILED: testVolatilePrimitive()");
        }


        if (!t.testStaticPrimitive()) {
            failed = true; System.out.println("FAILED: testStaticPrimitive()");
        }
        if (!t.testAccessibleStaticPrimitive()) {
            failed = true; System.out.println("FAILED: testAccessibleStaticPrimitive()");
        }

        if (!t.testObject()) {
            failed = true; System.out.println("FAILED: testObject()");
        }
        if (!t.testAccessibleObject()) {
            failed = true; System.out.println("FAILED: testAccessibleObject()");
        }

        if (!t.testVolatileObject()) {
            failed = true; System.out.println("FAILED: testVolatileObject()");
        }

        if (!t.testStaticObject()) {
            failed = true; System.out.println("FAILED: testStaticObject()");
        }
        if (!t.testAccessibleStaticObject()) {
            failed = true; System.out.println("FAILED: testAccessibleStaticObject()");
        }

        if (failed) {
            throw( new Throwable("Test for Field.set FAILED"));
        }
    }

}

class Test {

    private final int i;
    private final Object o;

    public final int ni;
    public final Object no;

    public volatile int vi;
    public volatile Object vo;

    private static final int si = 408-343-1407;;
    private static final Object so = new Object();

    Test() {
        i = 911;
        ni = i;
        vi = i;
        o = new Object();
        no = o;
        vo = o;
    }

    boolean testPrimitive()
        throws NoSuchFieldException
    {
        try {
            Field f = this.getClass().getDeclaredField("ni");
            f.setInt(this, 7);
            if (ni != 7) {
                System.out.println("setInt() did not work");
            }
            return false;  // FAILED
        } catch (IllegalAccessException iae) {
            return true;   // PASSED
        }
    }

    boolean testStaticPrimitive()
        throws NoSuchFieldException
    {
        try {
            Field f = this.getClass().getDeclaredField("si");
            f.setInt(this, 13);
            if (si != 13) {
                System.out.println("setInt() did not work for static");
            }
            return false;  // FAILED
        } catch (IllegalAccessException iae) {
            return true;   // PASSED
        }
    }

    boolean testObject()
        throws NoSuchFieldException
    {
        Object saved = no;
        try {
            Field f = this.getClass().getDeclaredField("no");
            f.set(this, new Object());
            if (no == saved) {
                System.out.println("set() did not work");
            }
            return false;  // FAILED
        } catch (IllegalAccessException iae) {
            return true;   // PASSED
        }
    }

    boolean testStaticObject()
        throws NoSuchFieldException
    {
        Object saved = so;
        try {
            Field f = this.getClass().getDeclaredField("so");
            f.set(this, new Object());
            if (so == saved) {
                System.out.println("set() did not work for static");
            }
            return false;  // FAILED
        } catch (IllegalAccessException iae) {
            return true;   // PASSED
        }
    }

    boolean testAccessiblePrimitive()
        throws NoSuchFieldException
    {
        try {
            Field f = this.getClass().getDeclaredField("i");
            f.setAccessible(true);
            f.setInt(this, 7);
            if (i != 7) {
                System.out.println("setInt() did not work");
            }
            return true;   // PASSED
        } catch (IllegalAccessException iae) {
            return false;  // FAILED
        }
    }

    boolean testAccessibleStaticPrimitive()
        throws NoSuchFieldException
    {
        try {
            Field f = this.getClass().getDeclaredField("si");
            f.setAccessible(true);
            f.setInt(this, 13);
            if (si != 13) {
                System.out.println("setInt() did not work for static");
            }
            return false;  // FAILED
        } catch (IllegalAccessException iae) {
            return true;   // PASSED
        }
    }

    boolean testAccessibleObject()
        throws NoSuchFieldException
    {
        Object saved = o;
        try {
            Field f = this.getClass().getDeclaredField("o");
            f.setAccessible(true);
            f.set(this, new Object());
            if (o == saved) {
                System.out.println("set() did not work");
            }
            return true;   // PASSED
        } catch (IllegalAccessException iae) {
            return false;  // FAILED
        }
    }

    boolean testAccessibleStaticObject()
        throws NoSuchFieldException
    {
        Object saved = so;
        try {
            Field f = this.getClass().getDeclaredField("so");
            f.setAccessible(true);
            f.set(this, new Object());
            if (so == saved) {
                System.out.println("set() did not work for static");
            }
            return false;  // FAILED
        } catch (IllegalAccessException iae) {
            return true;   // PASSED
        }
    }

    boolean testVolatilePrimitive()
        throws NoSuchFieldException
    {
        try {
            Field f = this.getClass().getDeclaredField("vi");
            f.setAccessible(true);
            f.setInt(this, 7);
            if (vi != 7) {
                System.out.println("setInt() did not work");
            }
            return true;   // PASSED
        } catch (IllegalAccessException iae) {
            return false;  // FAILED
        }
    }


    boolean testVolatileObject()
        throws NoSuchFieldException
    {
        Object saved = vo;
        try {
            Field f = this.getClass().getDeclaredField("vo");
            f.setAccessible(true);
            f.set(this, new Object());
            if (vo == saved) {
                System.out.println("set() did not work");
            }
            return true;   // PASSED
        } catch (IllegalAccessException iae) {
            return false;  // FAILED
        }
    }
}