Java Delete File Recursively deleteRecursively(File file)

Description

Delete the file recursively.

License

Apache License

Parameter

Parameter	Description
file	a parameter

Exception

Parameter	Description
IOException	an exception

Declaration

public static void deleteRecursively(File file) throws IOException 

Method Source Code

//package com.java2s;
/**//from   w  w w . j a va  2  s  . co  m
 * Copyright 2014 Cisco Systems, Inc.
 *
 * 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.
 */

import com.google.common.base.Preconditions;
import java.io.File;
import java.io.IOException;

public class Main {
    /**
     * Delete the file recursively.
     * @param file
     * @throws IOException
     */
    public static void deleteRecursively(File file) throws IOException {
        if (file.isDirectory()) {
            deleteDirectoryContents(file);
        }
        if (file.exists() && !file.delete()) {
            throw new IOException("Failed to delete " + file);
        }
    }

    /**
     * Delete the files in directory.
     *
     * @param directory
     * @throws IOException
     */
    public static void deleteDirectoryContents(File directory) throws IOException {
        Preconditions.checkArgument(directory.isDirectory(), "Not a directory: %s", directory);
        File[] files = directory.listFiles();
        if (files == null) {
            throw new IOException("Error listing files for " + directory);
        }
        for (File file : files) {
            deleteRecursively(file);
        }
    }
}

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