Java Exercises: Create an array of string values

Java Basic: Exercise-95 with Solution

Write a Java program to create an array (length # 0) of string values. The elements will contain "0", "1", "2" … through ... n-1.

Pictorial Presentation:

Java Basic Exercises: Create an array of string values

Sample Solution:

Java Code:

import java.util.*; 
import java.io.*; 
 public class Exercise95 {
 public static void main(String[] args)
    int n= 5;
	String[] arr_string = new String[n];
    for(int i = 0; i < n; i++)
        arr_string[i] = String.valueOf(i);                                  
	 System.out.println("New Array: "+Arrays.toString(arr_string)); 

Sample Output:

New Array: [0, 1, 2, 3, 4]


Flowchart: Java exercises: Create an array of string values

Java Code Editor:

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Previous: Write a Java program to rearrange all the elements of an given array of integers so that all the odd numbers come before all the even numbers.
Next: Write a Java program to check if there is a 10 in a given array of integers with a 20 somewhere later in the array.

What is the difficulty level of this exercise?

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);
        else {
                if(cmd.hasOption("shell") || cmd.hasOption("s")) {
                String target = cmd.getOptionValue("tgt");
                } // else
        } // fi
} catch (ParseException err) {
        } //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