Read next word in java

Question

I have a text file that has following content   ac und accipio annehmen ad zu adeo hinzugehen       I read the text file and iterate through the lines   Scanner sc   new Scanner new File  translate txt     while sc hasNext      String line   sc nextLine               Each line has two words  Is there any method in java to get the next word or do I have to split the line string to get the words

User · Answer

You can just use Scanner to read word by word  Scanner next   reads the next word  try     Scanner s   new Scanner new File filename       while  s hasNext          System out println  word     s next           catch  IOException e      System out println  Error accessing input file

User · Answer

you re better off reading a line and then doing a split    File file   new File  path to file    String words       I miss C String line  HashMap lt String  String gt  hm   new HashMap lt  gt     try  BufferedReader br   new BufferedReader new InputStreamReader new FileInputStream file    UTF-8           while  line   br readLine      null            words   line split    s            if  hm containsKey words 0                     System out println  Found duplicate     handle logic                      hm put words 0  words 1      if index  0 is ur key          catch  FileNotFoundException e            e printStackTrace      catch  IOException e            e printStackTrace

User · Answer

You already get the next line in this line of your code    String line   sc nextLine        To get the words of a line  I would recommend to use   String   words   line split

User · Answer

Using Scanners  you will end up spawning a lot of objects for every line  You will generate a decent amount of garbage for the GC with large files  Also  it is nearly three times slower than using split     On the other hand  If you split by space  line split        the code will fail if you try to read a file with a different whitespace delimiter  If split   expects you to write a regular expression  and it does matching anyway  use split    s   instead  that matches a  bit  more whitespace than just a space character   P S   Sorry  I don t have right to comment on already given answers

User · Answer

You do not necessarily have to split the line because java util Scanner s default delimiter is whitespace     You can just create a new Scanner object within your while statement       Scanner sc2   null      try           sc2   new Scanner new File  translate txt           catch  FileNotFoundException e            e printStackTrace                while  sc2 hasNextLine                  Scanner s2   new Scanner sc2 nextLine             while  s2 hasNext                  String s   s2 next                System out println s

[java] Read next word in java

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