65 lines
1.2 KiB
Java
65 lines
1.2 KiB
Java
package net.sourceforge.tuned;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.List;
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public class FastFile extends File {
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private Long length;
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private Boolean isDirectory;
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private Boolean isFile;
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public FastFile(String path) {
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super(path);
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}
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public FastFile(File parent, String child) {
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super(parent, child);
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}
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@Override
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public long length() {
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return length != null ? length : (length = super.length());
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}
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@Override
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public boolean isDirectory() {
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return isDirectory != null ? isDirectory : (isDirectory = super.isDirectory());
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}
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@Override
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public boolean isFile() {
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return isFile != null ? isFile : (isFile = super.isFile());
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}
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@Override
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public File[] listFiles() {
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String[] names = list();
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if (names == null)
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return null;
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File[] files = new File[names.length];
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for (int i = 0; i < names.length; i++) {
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files[i] = new FastFile(this, names[i]);
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}
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return files;
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}
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public static FastFile get(File file) {
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return new FastFile(file.getPath());
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}
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public static List<FastFile> get(Collection<File> files) {
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List<FastFile> result = new ArrayList<FastFile>(files.size());
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for (File file : files) {
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result.add(new FastFile(file.getPath()));
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}
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return result;
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}
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}
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