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test/tools/javac/api/evalexpr/ByteArrayClassLoader.java@959103a6100f (annotated)

test/tools/javac/api/evalexpr/ByteArrayClassLoader.java

Wed, 27 Apr 2016 01:34:52 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:34:52 +0800

changeset 0

959103a6100f

child 2525

2eb010b6cb22

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	package evalexpr;
aoqi@0	25
aoqi@0	26	import java.util.Map;
aoqi@0	27
aoqi@0	28	/**
aoqi@0	29	* A class loader which loads classes from byte arrays.
aoqi@0	30	*
aoqi@0	31	* <p><b>This is NOT part of any supported API.
aoqi@0	32	* If you write code that depends on this, you do so at your own
aoqi@0	33	* risk. This code and its internal interfaces are subject to change
aoqi@0	34	* or deletion without notice.</b></p>
aoqi@0	35	* @author Peter von der Ah&eacute;
aoqi@0	36	*/
aoqi@0	37	public class ByteArrayClassLoader extends ClassLoader {
aoqi@0	38	/**
aoqi@0	39	* Maps binary class names to class files stored as byte arrays.
aoqi@0	40	*/
aoqi@0	41	private Map<String, byte[]> classes;
aoqi@0	42
aoqi@0	43	/**
aoqi@0	44	* Creates a new instance of ByteArrayClassLoader
aoqi@0	45	* @param classes a map from binary class names to class files stored as byte arrays
aoqi@0	46	*/
aoqi@0	47	public ByteArrayClassLoader(Map<String, byte[]> classes) {
aoqi@0	48	this.classes = classes;
aoqi@0	49	}
aoqi@0	50
aoqi@0	51	@Override
aoqi@0	52	public Class<?> loadClass(String name) throws ClassNotFoundException {
aoqi@0	53	try {
aoqi@0	54	return super.loadClass(name);
aoqi@0	55	} catch (ClassNotFoundException e) {
aoqi@0	56	byte[] classData = classes.get(name);
aoqi@0	57	return defineClass(name, classData, 0, classData.length);
aoqi@0	58	}
aoqi@0	59	}
aoqi@0	60	}