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'databene commons' is an open source Java library by Volker Bergmann.
It provides extensions to the Java core library by utility classes, abstract concepts
and concrete implementations.
/*
* Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.databene.commons.array;
import org.databene.commons.converter.ToStringConverter;
/**
* Helper class for constructing byte arrays.
* Created: 27.12.2010 07:45:22
* @since 0.5.5
* @author Volker Bergmann
*/
public class ByteArrayBuilder extends AbstractByteArray {
// constructors ------------------------------------------------------------
public ByteArrayBuilder() {
super();
}
public ByteArrayBuilder(int initialCapacity) {
super(initialCapacity);
}
// interface ---------------------------------------------------------------
@Override
public ByteArrayBuilder add(byte item) {
if (this.buffer == null)
throw new UnsupportedOperationException("ArrayBuilder cannot be reused after invoking toArray()");
super.add(item);
return this;
}
public byte[] toArray() {
if (this.buffer == null)
throw new UnsupportedOperationException("ArrayBuilder cannot be reused after invoking toArray()");
byte[] result = new byte[this.itemCount];
System.arraycopy(buffer, 0, result, 0, this.itemCount);
this.itemCount = 0;
buffer = null;
return result;
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
for (int i = 0; i < itemCount; i++) {
if (i > 0)
builder.append(", ");
builder.append(ToStringConverter.convert(buffer[i], "[NULL]"));
}
return builder.toString();
}
}