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Java Collection, TreeSet Exercises: Compare two tree sets

Java Collection, TreeSet Exercises: Exercise-8 with Solution

Write a Java program to compare two tree sets.

Sample Solution:

Java Code:

import java.util.TreeSet;
import java.util.Iterator;

  public class Exercise8 {
  public static void main(String[] args) {
  // Create a empty tree set
        TreeSet<String> t_set1 = new TreeSet<String>();
     // use add() method to add values in the tree set
          t_set1.add("Red");
          t_set1.add("Green");
          t_set1.add("Black");
          t_set1.add("White");
          System.out.println("Free Tree set: "+t_set1);

          TreeSet<String> t_set2 = new TreeSet<String>();
          t_set2.add("Red");
          t_set2.add("Pink");
          t_set2.add("Black");
          t_set2.add("Orange");
          System.out.println("Second Tree set: "+t_set2);
          //comparison output in tree set
          TreeSet<String> result_set = new TreeSet<String>();
         for (String element : t_set1){
             System.out.println(t_set2.contains(element) ? "Yes" : "No");
          }      
     }
}

Sample Output:

Free Tree set: [Black, Green, Red, White]                              
Second Tree set: [Black, Orange, Pink, Red]                            
Yes                                                                    
No                                                                     
Yes                                                                    
No 

Flowchart:

Flowchart: Compare two tree sets

Java Code Editor:

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Java: Tips of the Day

Try and catch:

Java is excellent at catching errors, but it can only recover gracefully if you tell it what to do. The cascading hierarchy of attempting to perform an action in Java starts with try, falls back to catch, and ends with finally. Should the try clause fail, then catch is invoked, and in the end, there's always finally to perform some sensible action regardless of the results. Here's an example:

try {
        cmd = parser.parse(opt, args); 
       
        if(cmd.hasOption("help")) {
                HelpFormatter helper = new HelpFormatter();
                helper.printHelp("Hello ", opt);
                System.exit(0);
                }
        else {
                if(cmd.hasOption("shell") || cmd.hasOption("s")) {
                String target = cmd.getOptionValue("tgt");
                } // else
        } // fi
} catch (ParseException err) {
        System.out.println(err);
        System.exit(1);
        } //catch
        finally {
                new Hello().helloWorld(opt);
        } //finally
} //try

It's a robust system that attempts to avoid irrecoverable errors or, at least, to provide you with the option to give useful feedback to the user. Use it often, and your users will thank you!

Ref: https://red.ht/3EZc9OC