Java example source code file (delete.js)

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The delete.js Java example source code

/*
 * Copyright (c) 2010, 2013, 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.
 */

/**
 * Check delete operator.
 *
 * @test
 * @run
 */

var obj = { foo: 3, bar: "hello" };

print("foo" in obj);
print(obj.foo);
print(delete obj.foo);
print("foo" in obj);

print("bar" in obj);
print(obj.bar);
print(delete obj["bar"]);
print("bar" in obj);

print(delete obj.junk);
print(delete obj["junk"]);
print(delete obj[2]);

x = 3;
print(delete x);
print("x" in this);

// deleting literals
print(delete 2);
print(delete "hello");
print(delete true);
print(delete this);

function func() {
    print(delete this);
}

var o = {};
o.func = func;
o.func();