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8016644: Improve UnsupportedClassVersionError message

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Improved the UnsupportedClassVersionError message to hopefully be more user friendly

Reviewed-by: coleenp, dholmes, twisti
This commit is contained in:
Christian Tornqvist 2014-02-10 17:49:17 +01:00
parent 7a48daef16
commit dd25d6fed0
3 changed files with 91 additions and 5 deletions
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69
hotspot/test/runtime/ClassFile/UnsupportedClassFileVersion.java Normal file
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/*
* Copyright (c) 2014, 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
* @library /testlibrary
* @compile -XDignore.symbol.file UnsupportedClassFileVersion.java
* @run main UnsupportedClassFileVersion
*/
import java.io.File;
import java.io.FileOutputStream;
import jdk.internal.org.objectweb.asm.ClassWriter;
import jdk.internal.org.objectweb.asm.MethodVisitor;
import jdk.internal.org.objectweb.asm.Opcodes;
import com.oracle.java.testlibrary.*;
public class UnsupportedClassFileVersion implements Opcodes {
public static void main(String... args) throws Exception {
writeClassFile();
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, "-cp", ".", "ClassFile");
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldContain("ClassFile has been compiled by a more recent version of the " +
"Java Runtime (class file version 99.0), this version of " +
"the Java Runtime only recognizes class file versions up to " +
System.getProperty("java.class.version"));
output.shouldHaveExitValue(1);
}
public static void writeClassFile() throws Exception {
ClassWriter cw = new ClassWriter(0);
MethodVisitor mv;
cw.visit(99, ACC_PUBLIC + ACC_SUPER, "ClassFile", null, "java/lang/Object", null);
mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
mv.visitInsn(RETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
cw.visitEnd();
try (FileOutputStream fos = new FileOutputStream(new File("ClassFile.class"))) {
fos.write(cw.toByteArray());
}
}
}