Reverse String in Java Practice Program #41

This tutorial will walk you through the reverse string in java program! ✅This is a fun little java program that might help you learn java :)

Each "letter" or symbol in a string is called a character. To reverse a string, all you have to do, is store each character, and then stick em backwards!

So:

"dog"

turns into:

Characters 'd' 'o' 'g'

which we can reverse:

'g' 'o' 'd'

and make the reversed string:

"god"

This reverse string in java program can be tricky at first... But SURELY you'll get it :) If you followed along, congrats! You learned-by-doing!

I hope you enjoyed this java program to reverse a string in java! I like to have a nice mix of tutorials and actual java projects for you all :)

Was this reverse string in java program helpful for you? -

Disclosure: The Springboard link provided is linked to my affiliate account & supports the channel.

~

Alex Lee

[vishy]

Really enjoyed working through this practice program ... will be working through the rest of your practice programs and tutorials! Please continue uploading programs and tutorials - they are invaluable. As always, thanks loads Alex!

[jorgerivera]

This channel is keeping me sane as I study for my Java Final next Monday!! Super underrated channel, cant wait for the blow-up!!

[marko]

Here's by far the simplest solution I've found so far (with user input):

Scanner scan = new Scanner (System.in);
System.out.println("Enter a String: ");
String s = scan.nextLine();

System.out.println(new

[qwerasdfhjkio]

I found an easier way!

public String reverseString(String s) {
String reversedString = "";
for (int i = s.length()-1; i >= 0; i--)
reversedString += s.charAt(i);
s = reversedString;
return s;
}

Basically, you take a string as a parameter.
Then you create an empty string. We'll need it later.
Then, you start a loop which basically says to copy each character of "s" starting from the left to this empty string.
then set "s" to the reversedString and return.

[kamalkaur]

Alex you know, I am beginner of java but after listen your video my enthusiasm is build up. I am really apricated by heart to see your amazing job

[anathadenver]

That was a great tutorial. I didn't expect that you'd explain how would the computer read the code. That made me easier to compose in my mind all the codes that you've written. Thank you so much.

[ClarkieReidri]

A more efficient way of coding this is to just make it one for loop to decrement through the initial String but making a int tempIndex starting at 0, counting through the decrements, to add each char to the array using the string constructor to pass the now reversed char array to a string.

[mamtasingha]

You are great Alex, Really njoyed working with you... I can easily understand all your concepts ... It's supper fun Thank you ❤️

[imtiazbasha]

Amazing and crystal clear explanation. Really enjoyed this practice program. Thank you Alex

[DC-xjfe]

Used this week 2 day 2 of Revature Java training. Very helpful. Thanks!

[AngieGiovanna]

omg i was finally able to run my first program after watching this video! this helped me so much!

[crazywarrior]

Hey Alex I have recently joined your discord server and wondered if u are available anytime as I have some questions as I have just started coding. Love your content by the way! Much easier to learn Java with you than any channel I have found before.

[marinastr]

Thank you very much for this video! I am studying applied informatics and I’m in the first semester. During corona everything‘s a little complicated, so I’m even more glad that you uploaded this tutorial. Have a good one! ☺️

[ItzKingzz]

I think this code is a lot easier, just so we don't have to use arrays:

public class ReverseString {
public static void main(String[] args) {
String test = "dog"; // have the string "dog"
reverse(test); // reverses and prints out dog
}
public static void reverse(String s){
StringBuilder result = new StringBuilder(); // creating a new string called result

for (int h = s.length() - 1; h >= 0; h--) { // go through the s backwards
result.append(s.charAt(h)); // appends or add the characters into our new string result
}
System.out.println(result); // print out the reverse version
}
}

[searemebrahtu]

public static void main(String[] arg){
String myStr = "hello";
String h ="";
for(int i = myStr.length() - 1; i >= 0; i--){
h = h + myStr.charAt(i);
}

System.out.println(h);

}


Wouldnt this be easier?

[werren]

if java can make dog to god, imagine what java could do to you

[linusziegler]

I gotta admit, learning with this channel is much more fun, keep it up :D

[flashinstincts]

i think u are an angel. u are amazing. i learn how helpful humans are from ur kind work.

[indranildutta]

made this code to have ask for input --- works charm

[mohanrajpalanisamy]

{
String s="Dog", rev="";
Int l=s.length();
For(i=l-1;1>=0;1--)
{
rev=rev+s.charAt(i);
}
sysout(rev)
}