Java File Find find(File dir, String baseName)

Description

Find a file starting with the baseName .

License

Apache License

Parameter

Parameter	Description
dir	The directory the file is located in.
baseName	The name the sought after file starts with.

Exception

Parameter	Description
IllegalArgumentException	if either argument is null

Return

The File or null

Declaration

public static File find(File dir, String baseName) 

Method Source Code

//package com.java2s;
/*//from   w  ww  . j  a  va 2  s . c  om
 * Copyright to the original author or authors.
 *
 * 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 java.io.File;

public class Main {
    /**
     * Find a file starting with the {@code baseName}.
     *
     * @param dir The directory the file is located in.
     * @param baseName The name the sought after file starts with.
     *
     * @return The {@code File} or {@code null}
     *
     * @throws IllegalArgumentException if either argument is {@code null}
     */
    public static File find(File dir, String baseName) {
        if (dir == null)
            throw new IllegalArgumentException("directory can not be null");
        if (baseName == null)
            throw new IllegalArgumentException("baseName can not be null");
        File found = null;
        File[] files = dir.listFiles();
        if (files != null) {
            for (File file : files) {
                if (file.getName().startsWith(baseName)) {
                    found = file;
                    break;
                }
            }
        }
        return found;
    }
}

Related

1. find(File absolutePath, FileFilter filter)
2. find(File baseFile, String regex)
3. find(File dir, String suffix, Set ignore)
4. find(File file)
5. find(File file, Pattern pattern, int limit, List found, Set visited)
6. find(File folder, final String name)