// need this import for reading data:
import java.io.*;

public class For {

    public static void main (String [] args)  throws IOException {
	// Create a buffered reader
	// need only one buffered reader for all your reading
	BufferedReader in = new BufferedReader(
			new InputStreamReader(System.in));
	// string for storing a line of input
	String line;

	// Read one integer
	// prompt the user:
        System.out.print("Please enter an integer: ");
	// read a line of input:
	line = in.readLine();
	// extract the integer from the entered data:
	int n = Integer.parseInt(line);

	int i; // i is used for counting in the loop
	for (i = 0; i < n; ++i) {

	// An equivalent while loop:
	i = 0;
	while (i < n) {

This is an example from CSci 1211 course.

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