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[gsupriyarao@yahoo.com]

.....................................

[DonCash]

Do you have an example input file and desired output?

Are you happy to have it read in line by line and search that string for the word?

[DonCash]

So once it finds a word it will show the 2 words to the left on the same line and then print out the 2 words to the right but with a new line after each of these?

[tress]

Does anyone know how to check if a number is prime or not

[DonCash]

Tress, why have you posted this unrelated question here? It would make more sense to start a new thread!

Please bare that in mind in the future. Anyway, use this code:

Code:

public class prime {
		 
public static void main(String[] args) {    

int num; 
int i; 
int factor; 
boolean isprime; 
		 
for(num = 2; num < 20; num++) { 
isprime = true;  
factor = 0; 

// see if num is evenly divisible 
for(i=2; i <= num/2; i++) { 
if((num % i) == 0) { 

// num is evenly divisible -- not prime 
isprime = false; 
factor = i; 
} 
} 
		 
if(isprime) 
System.out.println(num + " is prime."); 
else 
System.out.println("Largest factor of " + num + " is " + factor); 
   } 
 }    
}

[DonCash]

I'm still trying to figure out how to do this. Ill post some code as soon as possible.

To start though, here is the code to read in a document line by line:

Code:

FileInputStream in = new FileInputStream("file_path/file.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(in));

String strLine;

while ((strLine = br.readLine()) != null) {
System.out.println(strLine);
}