GuavaFiles.java Source code

Introduction

Here is the source code for GuavaFiles.java

Source

/* Demo of Google Guava Files class
 *
 * Mark J. Nenadov (2011)
 * Essex, Ontario
 * Email: <marknenadov@gmail.com>
 *
 * LICENSING
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser 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/>. 
 *
 */

import com.google.common.io.Files;

import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;

public class GuavaFiles {

    public static void main(String args[]) {
        File srcFile = new File("c:/SumOS.txt");

        demonstrateCopy(srcFile);
        demonstrateEqual(srcFile);
        demonstrateAppend(srcFile);
    }

    private static void demonstrateCopy(File srcFile) {
        try {
            Files.copy(srcFile, new File("c:/users/mark/file2.txt"));
            System.out.println("Just copied a file...");
        } catch (IOException e) {
            System.out.println("Exception occurred [" + e.getMessage() + "]");
        }
    }

    private static void demonstrateEqual(File srcFile) {
        try {
            System.out.println("The source file we copied is equal to the destination , so this should be true: "
                    + Files.equal(srcFile, new File("c:/users/mark/SumOS2.txt")));
        } catch (IOException e) {
            System.out.println("Exception occurred [" + e.getMessage() + "]");
        }
    }

    private static void demonstrateAppend(File srcFile) {
        try {
            Files.append("test123", new File("c:/users/mark/file2.txt"), Charset.defaultCharset());
            System.out.println(
                    "Now that we appended text to the destination file, the equal() check should be false: "
                            + Files.equal(srcFile, new File("c:/users/mark/file2.txt")));
        } catch (IOException e) {
            System.out.println("Exception occurred [" + e.getMessage() + "]");
        }
    }
}