Create a folder in Java

Package test; import Java. io. file; import Java. io. ioexception; public class createfiletest {/*** create a single file * @ Param destfilename file name * @ return returns true if the file is created successfully; otherwise, returns false */public static Boolean createfile (string destfilename) {file = new file (destfilename); If (file. exists () {system. out. println ("Creating a single file" + destfilename + "failed. The target file already exists! "); Return false;} If (destfilename. endswith (file. separator) {system. out. println ("Creating a single file" + destfilename + "failed. The target cannot be a directory! "); Return false;} If (! File. getparentfile (). exists () {system. Out. println ("The path of the target file does not exist. You are about to create a file... "); If (! File. getparentfile (). mkdirs () {system. Out. println ("An error occurred while creating the directory where the directory file is located! "); Return false ;}}// create the target file try {If (file. createnewfile () {system. out. println ("Creating a single file" + destfilename + "successful! "); Return true;} else {system. Out. println (" Creating a single file "+ destfilename +" failed! "); Return false ;}} catch (ioexception e) {e. printstacktrace (); system. Out. println (" Creating a single file "+ destfilename +" failed! "); Return false;}/*** create directory * @ Param destdirname target directory name * @ return returns true if the directory is created successfully, otherwise, false */public static Boolean createdir (string destdirname) {file dir = new file (destdirname); If (dir. exists () {system. out. println ("creating directory" + destdirname + "failed. The target directory already exists! "); Return false;} If (! Destdirname. endswith (file. separator) destdirname = destdirname + file. separator; // create a single directory if (dir. mkdirs () {system. out. println ("creating directory" + destdirname + "successful! "); Return true;} else {system. Out. println (" create directory "+ destdirname +" successful! "); Return false ;}} /*** create a temporary file * @ Param prefix the prefix of the temporary file * @ Param suffix the suffix of the temporary file * @ Param dirname the directory where the temporary file is located. If the input is null, then, create a temporary file * @ return under the user's document directory. After the temporary file is successfully created, return the standard path name string of the abstract path. Otherwise, return NULL */public static string createtempfile (string prefix, string suffix, string dirname) {file tempfile = NULL; try {If (dirname = NULL) {// create a temporary file tempfile = file in the default folder. createtempfile (prefix, suffix); Return tempfile. getcanonicphosphatase Ath ();} else {file dir = new file (dirname); // If the directory of the temporary file does not exist, create if (! Dir. exists () {If (! Createfiletest. createdir (dirname) {system. Out. println ("Creating a temporary file failed. The directory where the temporary file cannot be created! "); Return NULL ;}} tempfile = file. createtempfile (prefix, suffix, DIR); return tempfile. getCanonicalPath () ;}} catch (ioexception e) {e. printstacktrace (); system. out. println ("failed to create temporary file" + E. getmessage (); return NULL ;}} public static void main (string [] ARGs) {// create the directory string dirname = "D:/test/test0/test1 "; createfiletest. createdir (dirname); // create the file string filename = dirname + "/Test2/testfile.txt"; createfiletest. createfile (filename); // create a temporary file string prefix = "Temp"; string suffix = ". TXT "; for (INT I = 0; I <10; I ++) {system. out. println ("temporary file created:" + createfiletest. createtempfile (prefix, suffix, dirname ));}}}