Java Utililty Methods File Attribute

List of utility methods to do File Attribute

  1. HOME
  2. Java
  3. F
  4. File Attribute

Description

The list of methods to do File Attribute are organized into topic(s).

Method

booleancheckIfExecutableIsInPATH(final String executableName)
Check if an executable is in the PATH. 
if (executableName == null) {
    throw new NullPointerException("executableName argument cannot be null");
final String pathEnv = System.getenv("PATH");
if (pathEnv == null) {
    return false;
final FilenameFilter filter = new FilenameFilter() {
...
booleandoesExecutableExist(String executablePath)
does Executable Exist 
if (new File(executablePath).exists()) {
    return true;
String systempath = System.getenv("PATH");
String[] paths = systempath.split(File.pathSeparator);
for (String path : paths) {
    if (new File(path, executablePath).exists()) {
        return true;
...
voidensureExecutable(final File file)
ensure Executable 
if (!file.canExecute() && !file.setExecutable(true)) {
    throw new IllegalStateException(String.format("Failed to set %s executable", file.getAbsolutePath()));
voidensureExecutable(IPath path)
ensure Executable 
if (pathExists(path)) {
    File file = path.toFile();
    if (!file.canExecute()) {
        if (!file.setExecutable(true)) {
            file.setExecutable(true, true);
booleanensureFileIsExecutable(String filename)
Ensure that given file, if it exists, is executable 
File file = new File(filename);
if (file.exists()) {
    if (file.canExecute()) {
        return true;
    return file.setExecutable(true);
return false;
...
voidfileExecute(String path)
file Execute 
try {
    Process child = Runtime.getRuntime().exec(new String[] { "cmd.exe", "/c", path });
} catch (IOException e) {
    e.printStackTrace();
StringfindInPath(String executable, String path, String pathSeparator)
Works kind of like the "which" program; the method won't try to apply PATHEXT to executable when searching the PATH. 
final String[] parts = path.split(pathSeparator);
for (String part : parts) {
    final File potentialExecutable = new File(part, executable);
    if (potentialExecutable.exists()) {
        executable = potentialExecutable.getAbsolutePath();
        break;
return executable;
FilefindJavaCompilerExecutableInDir(File dir)
find Java Compiler Executable In Dir 
if (dir == null || !dir.exists() || !dir.isDirectory()) {
    return null;
for (String candidateJavaCompilerFileName : CANDIDATE_JAVAC_FILES) {
    File javaCompilerFile = new File(dir, candidateJavaCompilerFileName);
    if (javaCompilerFile.exists()) {
        return javaCompilerFile;
return null;
FilefindJavaExecutable(File vmInstallLocation)
Starting in the specified VM install location, attempt to find the 'java' executable file. 
for (int i = 0; i < CANDIDATE_JAVA_EXECUTABLES.length; i++) {
    for (int j = 0; j < CANDIDATE_JAVA_LOCATIONS.length; j++) {
        File javaFile = new File(vmInstallLocation,
                CANDIDATE_JAVA_LOCATIONS[j] + CANDIDATE_JAVA_EXECUTABLES[i]);
        if (javaFile.isFile()) {
            return javaFile;
return null;
StringfindUnixExecutable(String unixCommandLineExecutables)
find Unix Executable 
String[] default_exec = unixCommandLineExecutables.split(",");
String[] appendPath = null;
if (isMacOS()) {
    appendPath = new String[1];
    appendPath[0] = "PATH=$PATH:" + System.getProperty("user.home") + "/bin:/opt/local/bin";
try {
    for (String exec : default_exec) {
...