Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Java string 2D array

Posted on 2009-05-20
1
Medium Priority
?
408 Views
Last Modified: 2013-11-23
I have a string with this as the input: abcd efgh ijkl abld abem
now this can be random
i want to  split this using string.split[] and i want to create a 2 dim array to input this in a way that all the elements starting with ab is in the 1st array of 2 dim
like if it is in String[2][2] so to search for this one will first look at string[1][0] so in string[1]....all the elements with ab would be stored.

I hope i tried to make things clear
0
Comment
Question by:SunScreenCert
1 Comment
 
LVL 3

Accepted Solution

by:
hazgoduk earned 500 total points
ID: 24434358
I'd use a HashMap<String, Vector> or something.

Do the split so you have ab and cd as 2 seperate strings, then you can store them as follows.

To get them back again you can just say Vector values = map.get(ab); to give you  Vector with all the elements that started with ab.

Change to HashMap if you want the elements to be unique and LinkedHashMap if you want them to remain in order
String part1 = "ab";
String part2 = "cd";
 
public void store(String part1, String part2)
{
  Vector values = null;
  if(map.contains(part1))
  {
    values = map.get(part1);
  }
  else
  {
    values = new Vector();
    map.put(part1, values);
  }
 
  values.add(part2);
}

Open in new window

0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

An old method to applying the Singleton pattern in your Java code is to check if a static instance, defined in the same class that needs to be instantiated once and only once, is null and then create a new instance; otherwise, the pre-existing insta…
Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
This tutorial covers a practical example of lazy loading technique and early loading technique in a Singleton Design Pattern.
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …
Suggested Courses

876 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question