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Java example source code file (PatternFilenameFilter.java)
The PatternFilenameFilter.java Java example source code/* * Copyright (C) 2006 The Guava 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. */ package com.google.common.io; import com.google.common.annotations.Beta; import com.google.common.annotations.GwtIncompatible; import com.google.common.base.Preconditions; import java.io.File; import java.io.FilenameFilter; import java.util.regex.Pattern; import java.util.regex.PatternSyntaxException; import javax.annotation.Nullable; /** * File name filter that only accepts files matching a regular expression. This class is thread-safe * and immutable. * * @author Apple Chow * @since 1.0 */ @Beta @GwtIncompatible public final class PatternFilenameFilter implements FilenameFilter { private final Pattern pattern; /** * Constructs a pattern file name filter object. * * @param patternStr the pattern string on which to filter file names * * @throws PatternSyntaxException if pattern compilation fails (runtime) */ public PatternFilenameFilter(String patternStr) { this(Pattern.compile(patternStr)); } /** * Constructs a pattern file name filter object. * * @param pattern the pattern on which to filter file names */ public PatternFilenameFilter(Pattern pattern) { this.pattern = Preconditions.checkNotNull(pattern); } @Override public boolean accept(@Nullable File dir, String fileName) { return pattern.matcher(fileName).matches(); } } Other Java examples (source code examples)Here is a short list of links related to this Java PatternFilenameFilter.java source code file: |
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