Question

WordFrequencies.java

1. Prepare a text file that contains text to analyze. It could be song lyrics to your favorite song.

2. With your code, you’ll read from the text file and capture the data into a data structure.

3. Using a data structure, write the code to count the appearance of each unique word in the lyrics.

4. Print out a word frequency list.

Example output of the word frequency list:

100: frog

94: dog

43: cog

20: bog

Answer 1

Solution:-

import java.io.*;
import java.util.*;
class WordFrequencies
{
public static void main(String args[]) throws Exception
{
Console con = System.console();
String str;
int i=0;

HashMap map = new HashMap();
HashSet set = new HashSet();
System.out.println("enter the file name : ");

str = con.readLine();

FileInputStream fis = new FileInputStream(str);

int ch;
String string=new String();
while((ch=fis.read())!=-1)
{
string+=(char)ch+"";
}
StringTokenizer st = new StringTokenizer(string);
while(st.hasMoreTokens())
{
String s =st.nextToken();
map.put(i+"",s);
set.add(s);
i++;
}
Iterator iter = set.iterator();
System.out.println("output of the word frequency list: ");
while(iter.hasNext())
{
String str1;
int count=0;

str1=(String)iter.next();

for(int j=0; j<i ; j++)
{
String str2;
str2=(String)map.get(j+"");
if(str1.equals(str2))
count++;
}

System.out.printf("%d:%s\n",count,str1);
}

}
}

Output:-