Ensure the byte buffer's capacity. - Java java.nio

Java examples for java.nio:ByteBuffer

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Description

Ensure the byte buffer's capacity.

Demo Code


//package com.java2s;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;

public class Main {
    /**/*w  ww  .jav  a 2s .  co m*/
     * Ensure the byte buffer's capacity. If a new buffer is allocated, its
     * content is empty (the old buffer's contents is not copied).
     * 
     * @param buffer
     *            The buffer to check or <code>null</code> if a new buffer
     *            should be allocated.
     */
    public static ByteBuffer ensureCapacity(ByteBuffer buffer, int capacity) {
        if (buffer == null || buffer.capacity() < capacity) {
            buffer = ByteBuffer.allocate(capacity);
        }
        return buffer;
    }

    /**
     * Ensure the char buffer's capacity. If a new buffer is allocated, its
     * content is empty (the old buffer's contents is not copied).
     * 
     * @param buffer
     *            The buffer to check or <code>null</code> if a new buffer
     *            should be allocated.
     */
    public static CharBuffer ensureCapacity(CharBuffer buffer, int capacity) {
        if (buffer == null || buffer.capacity() < capacity) {
            buffer = CharBuffer.allocate(capacity);
        }
        return buffer;
    }
}

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