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The java.io.File.mkdirs() creates the directory named by this abstract pathname, together with necessary and non-existent parent directories.ExampleLive Demoimport java.io.File; public class Main { public static void main(String[] args) { String directories = "D:\a\b\c\d "; File file = new File(directories); boolean result = file.mkdirs(); System.out.println("Status = " + result); } }OutputStatus = true
The CharMatcher class determines a true or false value for any Java char value, just as Predicate does for any Object.Sr.NoMethods & Description1CharMatcher and(CharMatcher other)Returns a matcher that matches any character matched by both this matcher and other.2static CharMatcher anyOf(CharSequence sequence)Returns a char matcher that matches any character present in the given character sequence.3boolean apply(Character character)Deprecated. Provided only to satisfy the Predicate interface; use matches(char) instead.4String collapseFrom(CharSequence sequence, char replacement)Returns a string copy of the input character sequence, with each group of consecutive characters that match this matcher replaced by a single replacement character.5int countIn(CharSequence sequence)Returns the number of matching ... Read More
The file class provides a method named exists() which returns true if the file specified in the current file object exists.ExampleLive Demoimport java.io.File; public class FileHandling { public static void main(String args[]) { File file = new File("samplefile"); if(file.exists()) { System.out.println("Given file existed"); } else { System.out.println("Given file does not existed"); } } }OutputGiven file does not existed
You can get the list of files in a directory −Create a directory object using the File class.Get the list of directories in it using the getName() method.Exampleimport java.io.File; public class FindingDirectories { public static void main(String args[]) { String dir ="C:/Users/Tutorialspoint/Desktop/movies"; File directory = new File(dir); File[] fileList = directory.listFiles(); for(File file: fileList) { System.out.println(file.getName()); } } }OutputArundhati HD.mp4 Okka Ammai Tappa.mkv Padamati Sandhya Ragam.mp4
The println() terminates the current line by writing the line separator string. The print() method just prints the given content.ExampleLive Demopublic class Sample { public static void main(String args[]) { System.out.println("Hello"); System.out.println("how are you"); System.out.print("Hello"); System.out.print("how are you"); } }OutputHello how are you Hellohow are you
The slice operator in Python takes two operands. First operand is the beginning of slice. The index is counted from left by default. A negative operand starts counting from end. Second operand is the index of last character in slice. If omitted, slice goes upto end.We want last four characters. Hence we count beginning of position from end by -4 and if we omit second operand, it will go to end.>>> string = "Thanks. I am fine" >>> string[-4:] 'fine'
Concept of variable in Python is different from C/C++. In C/C++, variable is a named location in memory. Even if value of one is assigned to another, it creates a copy in another location.int x=5; int y=x;For example in C++, the & operator returns address of the declared variable.cout
A string contains two integers separated by comma. It is first split in a list of two strings having digits.>>> s="1,2".split(",") >>> s ['1', '2']Two items are then converted to integers and used as arguments for complex() function>>> complex(int(s[0]), int(s[1])) (1+2j)This results in unpacking of string of integers in a complex number
Easiest way is to employ two nested for loops. Outer loop fetches each tuple and inner loop traverses each item from the tuple. Inner print() function end=’ ‘ to print all items in a tuple in one line. Another print() introduces new line after each tuple.ExampleL=[(1,2,3), (4,5,6), (7,8,9,10)] for x in L: for y in x: print(y, end=' ') print()Output1 2 3 4 5 6 7 8 9 10
The io module is now recommended and is compatible with Python 3's open syntax: The following code is used to read and write to unicode(UTF-8) files in PythonExampleimport io with io.open(filename,'r',encoding='utf8') as f: text = f.read() # process Unicode text with io.open(filename,'w',encoding='utf8') as f: f.write(text)