/*******************************************************************************
* Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.utility.classfile.tools;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
/**
* Add a few helper methods to DataInputStream.
*
* See "The Java Virtual Machine Specification" Chapter 4.
*/
public class ClassFileDataInputStream extends DataInputStream {
/**
* Public constructor.
*/
public ClassFileDataInputStream(InputStream in) {
super(in);
}
public final byte readU1() throws IOException {
return (byte) this.readUnsignedByte();
}
public final short readU2() throws IOException {
return (short) this.readUnsignedShort();
}
public final int readU4() throws IOException {
return this.readInt();
}
}