In Internet programming, programmers receive parameters via a query string, whic

Question

In Internet programming, programmers receive parameters via a query string, which looks like a String with fields separated by the "&" character. Each field typically has metadata part and a data part separated by the equal sign. An example of a query string is : first=Mike&last=Jones&id=mike1&password=hello

Using Scanner at least once, parse a query string like that above and output each field on a different line,
replacing the = sign with a colon followed by a space. For example, the output for the preceding sample
query string should look like:

first: Mike
last: Jones
id: mike1
password: hello

You can add more difficulty by putting the query string in a file and read it from the file. It is also
acceptable to simple create a variable called queryString and intialize it to a string similar to the
example given above.

Explanation / Answer

Answer:

import java.util.*;

public class ProgramStringrAndSplit {

   public static void main(String[] args) {
       String delimiter_taken = "&";
   String split ="first=Mike&last=Jones&id=mike1&password=hello";

       System.out.println("StringTokenizer Example: ");
       StringTokenizer st = new StringTokenizer(split,delimiter_taken);
       while (st.hasMoreElements()) {
           System.out.println("Elements Taken: " + st.nextElement ());
       }

      
       String[] elements = split.split(delimiter_taken);
       int elementCount = elements.length;
       for (int j = 0; j < elementCount; j++) {
           System.out.println(elements[j]);
       }
   }
}

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.