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Code: Select All | Copy To Clipboard123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212AwesomeCode();More awesome code!Insane code!Output(1,1,"Hello world!")Output(2,1,"Hello world!")Output(3,1,"Hello world!")Output(4,1,"Hello world!")/* * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of Oracle nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */import java.nio.file.*;import static java.nio.file.StandardCopyOption.*;import java.nio.file.attribute.*;import static java.nio.file.FileVisitResult.*;import java.io.IOException;import java.util.*;/** * Sample code that copies files in a similar manner to the cp(1) program. */public class Copy { /** * Returns {@code true} if okay to overwrite a file ("cp -i") */ static boolean okayToOverwrite(Path file) { String answer = System.console().readLine("overwrite %s (yes/no)? ", file); return (answer.equalsIgnoreCase("y") || answer.equalsIgnoreCase("yes")); } /** * Copy source file to target location. If {@code prompt} is true then * prompt user to overwrite target if it exists. The {@code preserve} * parameter determines if file attributes should be copied/preserved. */ static void copyFile(Path source, Path target, boolean prompt, boolean preserve) { CopyOption[] options = (preserve) ? new CopyOption[] { COPY_ATTRIBUTES, REPLACE_EXISTING } : new CopyOption[] { REPLACE_EXISTING }; if (!prompt || Files.notExists(target) || okayToOverwrite(target)) { try { Files.copy(source, target, options); } catch (IOException x) { System.err.format("Unable to copy: %s: %s%n", source, x); } } } /** * A {@code FileVisitor} that copies a file-tree ("cp -r") */ static class TreeCopier implements FileVisitor<Path> { private final Path source; private final Path target; private final boolean prompt; private final boolean preserve; TreeCopier(Path source, Path target, boolean prompt, boolean preserve) { this.source = source; this.target = target; this.prompt = prompt; this.preserve = preserve; } @Override public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) { // before visiting entries in a directory we copy the directory // (okay if directory already exists). CopyOption[] options = (preserve) ? new CopyOption[] { COPY_ATTRIBUTES } : new CopyOption[0]; Path newdir = target.resolve(source.relativize(dir)); try { Files.copy(dir, newdir, options); } catch (FileAlreadyExistsException x) { // ignore } catch (IOException x) { System.err.format("Unable to create: %s: %s%n", newdir, x); return SKIP_SUBTREE; } return CONTINUE; } @Override public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) { copyFile(file, target.resolve(source.relativize(file)), prompt, preserve); return CONTINUE; } @Override public FileVisitResult postVisitDirectory(Path dir, IOException exc) { // fix up modification time of directory when done if (exc == null && preserve) { Path newdir = target.resolve(source.relativize(dir)); try { FileTime time = Files.getLastModifiedTime(dir); Files.setLastModifiedTime(newdir, time); } catch (IOException x) { System.err.format("Unable to copy all attributes to: %s: %s%n", newdir, x); } } return CONTINUE; } @Override public FileVisitResult visitFileFailed(Path file, IOException exc) { if (exc instanceof FileSystemLoopException) { System.err.println("cycle detected: " + file); } else { System.err.format("Unable to copy: %s: %s%n", file, exc); } return CONTINUE; } } static void usage() { System.err.println("java Copy [-ip] source... target"); System.err.println("java Copy -r [-ip] source-dir... target"); System.exit(-1); } public static void main(String[] args) throws IOException { boolean recursive = false; boolean prompt = false; boolean preserve = false; // process options int argi = 0; while (argi < args.length) { String arg = args[argi]; if (!arg.startsWith("-")) break; if (arg.length() < 2) usage(); for (int i=1; i<arg.length(); i++) { char c = arg.charAt(i); switch (c) { case 'r' : recursive = true; break; case 'i' : prompt = true; break; case 'p' : preserve = true; break; default : usage(); } } argi++; } // remaining arguments are the source files(s) and the target location int remaining = args.length - argi; if (remaining < 2) usage(); Path[] source = new Path[remaining-1]; int i=0; while (remaining > 1) { source[i++] = Paths.get(args[argi++]); remaining--; } Path target = Paths.get(args[argi]); // check if target is a directory boolean isDir = Files.isDirectory(target); // copy each source file/directory to target for (i=0; i<source.length; i++) { Path dest = (isDir) ? target.resolve(source.getFileName()) : target; if (recursive) { // follow links when copying files EnumSet<FileVisitOption> opts = EnumSet.of(FileVisitOption.FOLLOW_LINKS); TreeCopier tc = new TreeCopier(source, dest, prompt, preserve); Files.walkFileTree(source, opts, Integer.MAX_VALUE, tc); } else { // not recursive so source must not be a directory if (Files.isDirectory(source)) { System.err.format("%s: is a directory%n", source); continue; } copyFile(source, dest, prompt, preserve); } } }}clip = new ZeroClipboard.Client();clip.setHandCursor( true );clip.glue("a-2");clip.setText(StripHTML("AwesomeCode();More awesome code!Insane code!Output(1,1,"Hello world!")Output(2,1,"Hello world!")Output(3,1,"Hello world!")Output(4,1,"Hello world!")/* * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of Oracle nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */import java.nio.file.*;import static java.nio.file.StandardCopyOption.*;import java.nio.file.attribute.*;import static java.nio.file.FileVisitResult.*;import java.io.IOException;import java.util.*;/** * Sample code that copies files in a similar manner to the cp(1) program. */public class Copy { /** * Returns {@code true} if okay to overwrite a file ("cp -i") */ static boolean okayToOverwrite(Path file) { String answer = System.console().readLine("overwrite %s (yes/no)? ", file); return (answer.equalsIgnoreCase("y") || answer.equalsIgnoreCase("yes")); } /** * Copy source file to target location. If {@code prompt} is true then * prompt user to overwrite target if it exists. The {@code preserve} * parameter determines if file attributes should be copied/preserved. */ static void copyFile(Path source, Path target, boolean prompt, boolean preserve) { CopyOption[] options = (preserve) ? new CopyOption[] { COPY_ATTRIBUTES, REPLACE_EXISTING } : new CopyOption[] { REPLACE_EXISTING }; if (!prompt || Files.notExists(target) || okayToOverwrite(target)) { try { Files.copy(source, target, options); } catch (IOException x) { System.err.format("Unable to copy: %s: %s%n", source, x); } } } /** * A {@code FileVisitor} that copies a file-tree ("cp -r") */ static class TreeCopier implements FileVisitor<Path> { private final Path source; private final Path target; private final boolean prompt; private final boolean preserve; TreeCopier(Path source, Path target, boolean prompt, boolean preserve) { this.source = source; this.target = target; this.prompt = prompt; this.preserve = preserve; } @Override public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) { // before visiting entries in a directory we copy the directory // (okay if directory already exists). CopyOption[] options = (preserve) ? new CopyOption[] { COPY_ATTRIBUTES } : new CopyOption[0]; Path newdir = target.resolve(source.relativize(dir)); try { Files.copy(dir, newdir, options); } catch (FileAlreadyExistsException x) { // ignore } catch (IOException x) { System.err.format("Unable to create: %s: %s%n", newdir, x); return SKIP_SUBTREE; } return CONTINUE; } @Override public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) { copyFile(file, target.resolve(source.relativize(file)), prompt, preserve); return CONTINUE; } @Override public FileVisitResult postVisitDirectory(Path dir, IOException exc) { // fix up modification time of directory when done if (exc == null && preserve) { Path newdir = target.resolve(source.relativize(dir)); try { FileTime time = Files.getLastModifiedTime(dir); Files.setLastModifiedTime(newdir, time); } catch (IOException x) { System.err.format("Unable to copy all attributes to: %s: %s%n", newdir, x); } } return CONTINUE; } @Override public FileVisitResult visitFileFailed(Path file, IOException exc) { if (exc instanceof FileSystemLoopException) { System.err.println("cycle detected: " + file); } else { System.err.format("Unable to copy: %s: %s%n", file, exc); } return CONTINUE; } } static void usage() { System.err.println("java Copy [-ip] source... target"); System.err.println("java Copy -r [-ip] source-dir... target"); System.exit(-1); } public static void main(String[] args) throws IOException { boolean recursive = false; boolean prompt = false; boolean preserve = false; // process options int argi = 0; while (argi < args.length) { String arg = args[argi]; if (!arg.startsWith("-")) break; if (arg.length() < 2) usage(); for (int i=1; i<arg.length(); i++) { char c = arg.charAt(i); switch (c) { case 'r' : recursive = true; break; case 'i' : prompt = true; break; case 'p' : preserve = true; break; default : usage(); } } argi++; } // remaining arguments are the source files(s) and the target location int remaining = args.length - argi; if (remaining < 2) usage(); Path[] source = new Path[remaining-1]; int i=0; while (remaining > 1) { source[i++] = Paths.get(args[argi++]); remaining--; } Path target = Paths.get(args[argi]); // check if target is a directory boolean isDir = Files.isDirectory(target); // copy each source file/directory to target for (i=0; i<source.length; i++) { Path dest = (isDir) ? target.resolve(source.getFileName()) : target; if (recursive) { // follow links when copying files EnumSet<FileVisitOption> opts = EnumSet.of(FileVisitOption.FOLLOW_LINKS); TreeCopier tc = new TreeCopier(source, dest, prompt, preserve); Files.walkFileTree(source, opts, Integer.MAX_VALUE, tc); } else { // not recursive so source must not be a directory if (Files.isDirectory(source)) { System.err.format("%s: is a directory%n", source); continue; } copyFile(source, dest, prompt, preserve); } } }}"))
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