write String to RandomAccessFile - Android java.io

Android examples for java.io:RandomAccessFile

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Description

write String to RandomAccessFile

Demo Code

/*/*from w ww . j a  v a2  s.co  m*/
 * Java build tools related to the Android operating system.
 * Copyright (C) 2011 DivDE <divde@free.fr>
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program 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 for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
//package com.book2s;
import java.io.IOException;
import java.io.RandomAccessFile;

public class Main {
    public static void writeString(RandomAccessFile file, int size,
            String text) throws IOException {
        int textLength = text.length();
        int remainingSize = size - textLength;
        if (remainingSize < 0) {
            throw new IllegalArgumentException(String.format(
                    "String is too long: '%s' is longer than %d", text,
                    size));
        }
        file.writeBytes(text);
        fillPadding(file, remainingSize);
    }

    public static void fillPadding(RandomAccessFile file, int size)
            throws IOException {
        if (size < 0) {
            throw new IOException(String.format("Negative padding: %d",
                    size));
        }
        for (int i = 0; i < size; i++) {
            file.writeByte(0);
        }
    }
}

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