Java identifies the number of occurrences of a word in an article _java

This article illustrates how Java recognizes the number of occurrences of a word in an article. Share to everyone for your reference. Specifically as follows:

1. Java Code:

Import Java.io.DataInputStream;
Import Java.io.FileInputStream;
Import java.io.FileNotFoundException;
Import java.io.IOException;
Import Java.util.StringTokenizer;
Import Java.util.regex.Matcher;
Import Java.util.regex.Pattern;
    public class Select {public static void main (string[] args) {int num = 0;
    Definition: Byte read stream FileInputStream fis;
      The try {//here path needs to be modified according to the circumstances FIS = new FileInputStream ("H:\\tankwar1.9\\src\\tank.java");
      DataInputStream dis = new DataInputStream (FIS);
      String line = null; while (line = Dis.readline ())!= null) {//Create character Parser StringTokenizer St=new StringTokenizer (line, "!&" ()
         {}+-= ':;<>/");
           while (St.hasmoretokens ()) {String string=st.nexttoken ();
        if (String.Equals ("if")) {num++}}
      ;
    } catch (FileNotFoundException e) {e.printstacktrace ();
    catch (IOException e) {e.printstacktrace ();
  } System.out.println (num);

 }
}

2. Select.java:

Import Java.io.DataInputStream;
Import Java.io.FileInputStream;
Import java.io.FileNotFoundException;
Import java.io.IOException;
Import Java.util.StringTokenizer;
Import Java.util.regex.Matcher;
Import Java.util.regex.Pattern;
    public class Select {public static void main (string[] args) {int num = 0;
    Definition: Byte read stream FileInputStream fis;
      try {fis = new FileInputStream ("H:\\tankwar1.9\\src\\tank.java");
      DataInputStream dis = new DataInputStream (FIS);
      String line = null; while (line = Dis.readline ())!= null) {//Create character resolution class StringTokenizer St=new StringTokenizer (line, "!&" ()
         {}+-= ':;<>/");
           while (St.hasmoretokens ()) {String string=st.nexttoken ();
        if (String.Equals ("if")) {num++}}
      ;
    } catch (FileNotFoundException e) {e.printstacktrace ();
    catch (IOException e) {e.printstacktrace ();
  } System.out.println (num);

 }
}

3. Stringtokenizerdemo.java:

Import java.util.*; public class Stringtokenizerdemo {public static void main (string[] args) {String str1 = "Hello world!
      This is Java code,stringtokenizer Demo. "; Declares and initializes the string str1 string str2 = "How do I use StringTokenizer?"
      StringTokenizer? ";
      Declares and initializes the string str2 stringtokenizer strT1 = new StringTokenizer (str1, ",.!"); Creates an object strT1 for the StringTokenizer class and constructs a string STR1 parser//To spaces, ",", "." and "!"
      As delimiter stringtokenizer strT2 = new StringTokenizer (str2, "?"); Creates an object strT2 for the StringTokenizer class and constructs a string STR2 parser//To spaces and "?"
      As delimiter int num1 = Strt1.counttokens ();
      Gets the number of language symbols in the string str1 int num2 = Strt2.counttokens (); Gets the number of language symbols in the string str2 System.out.println ("str1 has +num1+" words.)
      They are: ");
          while (Strt1.hasmoretokens ()) {//using loops to get the next language symbol in the string str1 and output string str = Strt1.nexttoken ();
      System.out.print ("\" "+str+"); } System.out.println ("\NSTR2 has" +num2+ words.)
      They are: "); WhileStrt2.hasmoretokens ()) {//Use loops to get the next language symbol in the string str2 and output string str = Strt2.nexttoken ();
      System.out.print ("\" "+str+");

 }
  }
}

I hope this article will help you with your Java programming.