Here is an example of a line of the file, all the lines are similar to this: ComputerName:NITIN UserID:GO ankurjain Station 9900 LanId: | (11/24 19:50:30) | Client is disconnected from agent. remove) any amount of whitespace before or after the comma, so there will be no whitespace before or after the text for each element in the resulting array.

ArrayList parts new ArrayList<>( Arrays.asList(textField.getText().split(','))) If you dont need it to specifically be an ArrayList, and can use any type of List, you can use the result of Arrays. java array split

The main function gets names of the files in a folder, and passes each file to the readFiles function where each line is split into 3 parts by a delimeter(|) and parts are send to getComputerName and getDate function which returns its values after further splitting the strings. You can create an ArrayList from the array via Arrays.asList. Public static String getDate(String splited) The methods in this class all throw a NullPointerException, if the specified array reference is null, except where. This class also contains a static factory that allows arrays to be viewed as lists. Public static String getComputerName(String splited) This class contains various methods for manipulating arrays (such as sorting and searching). String computerName=getComputerName(split) While (FileRead.hasNextLine() & FileRead.nextLine().isEmpty()=false) Try (Scanner FileRead = new Scanner(dataFile)) (Note that String.split takes a regex.) To handle the 'level', just subtract it from the length of the array of splits. This method acts as a bridge between array-based and collection-based APIs, in combination with Collection.toArray().The returned list is serializable and implements RandomAccess. No looping is necessary, since string can be split into an array in a single String.split call. Public static void readFiles(String fileName) throws FileNotFoundExceptionįileReader dataFile = new FileReader('yukt/'+fileName) The asList() method of class is used to return a fixed-size list backed by the specified array. Public static void main(String args) throws FileNotFoundExceptionįor (int i = 0 i < listOfFiles.length i++) I am trying to read file and split its line to get some context(Computer Name and Date), the code gives few lines of outputs then gives the following exception: Exception in thread 'main' : 1Īt FILE_MAIN.getComputerName(FILE_MAIN.java:34)Īt FILE_MAIN.readFiles(FILE_MAIN.java:24)

Java array split