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Java Exercises: Convert a given string into lowercase

Java Basic: Exercise-59 with Solution

Write a Java program to convert a given string into lowercase.

Pictorial Presentation: String to Lowercase

Java Basic Exercises: Convert a given string into lowercase

Sample Solution:

Java Code:

import java.util.*;
 public class Exercise59 {
     public static void main(String[] args){	
     Scanner in = new Scanner(System.in);
     System.out.print("Input a String: ");
	 String line = in.nextLine();
	 line = line.toLowerCase();
	 System.out.println(line); 
	 }			
}

Sample Output:

Input a String: THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG.           
the quick brown fox jumps over the lazy dog.

Flowchart:

Flowchart: Java exercises: Convert a given string into lowercase

Java Code Editor:

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Next: Write a Java program to find the penultimate (next to last) word of a sentence.

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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