/* package whatever; // don't place package name! */
 
import java.util.*;
import java.util.regex.*;
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) {
        // This is a source string example
        StringReader stringReader = new StringReader("\"field_name\":\"field_value\"");
        // The scanner instance with default values
        Scanner scanner = new Scanner(stringReader);
        // Set the scanner delimiter to \b* so it takes blanks as delimiters only if they're there
        scanner.useDelimiter(Pattern.compile("\b*"));
 
        while (scanner.hasNext()) {
        	System.out.print(scanner.next());
        }
	}
}