systemoutputstream.java

有关j2me的很好的例子可以研究一下

/*
 * @(#)SystemOutputStream.java	1.6 01/08/21
 * Copyright (c) 1999-2001 Sun Microsystems, Inc. All Rights Reserved.
 *
 * This software is the confidential and proprietary information of Sun
 * Microsystems, Inc. ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with Sun.
 *
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
 * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
 * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
 * THIS SOFTWARE OR ITS DERIVATIVES.
 */

package com.sun.midp.io;

import java.io.*;

/**
 *  Standard output stream for the System.out diagnostics messages.
 */
public class SystemOutputStream extends OutputStream {

    /**
     * Writes the specified byte to this output stream.
     *
     * @param      c   the <code>byte</code>.
     * @exception  IOException  if an I/O error occurs.
     */
    synchronized public void write(int c) throws IOException {
        putchar((char)c);
    }
    /**
     * native interface to output a single character to standard output.
     * @param c the char to output.
     */
    private static native void putchar(char c);

}