/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone {
	public static void main (String[] args) {
		System.out.println("--- First block ---");
		try {
			doTest("name1:surname1\nname2:surname2");         // <--- no line break, fine
		} catch (Exception ex) {
			System.out.println("First block failed: "+ex);
		}
		System.out.println("--- Second block ---");
		try {
			doTest("name3:surname3\nname4:surname4\n");       // <--- a single line break, fine
		} catch (Exception ex) {
			System.out.println("Second block failed: "+ex);
		}
		System.out.println("--- Third block ---");
		try {
			doTest("name5:surname5\nname6:surname6\n ");      // <--- an actual line of a space
		} catch (Exception ex) {
			System.out.println("Third block failed: "+ex);
		}
		System.out.println("--- Fourth block ---");
		try {
			doTest("name7:surname7\nname8:surname8\n\n");     // <--- an actual empty line
		} catch (Exception ex) {
			System.out.println("Fourth block failed: "+ex);
		}
	}
 
	public static void doTest(String string) throws Exception {
		Scanner scan = new Scanner(new StringReader(string));
		while(scan.hasNextLine()) {
			String descritpion = scan.nextLine();
			System.out.println("line" +descritpion);  
			String []temp = descritpion.split(":");   
			String name = temp[0];   
			String surname = temp[1];
			System.out.println("name : "+ name);   
			System.out.println("surname : "+ surname);
		}
	}
}

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