Thread: New to Java having problem debugging my code.

The code is supposed to capitalize the first letter of the word typed and reverse the sentence.

I believe i messed up here "String firstchar = sentence.substring (lString+1,lSpace+2).toUpperCase();"

I'm totally new to java and have no clue what could have went wrong :'(

import java.util.Scanner;
public class reverseSentence {
public static void main ( String [] args) {
String sentence, piece1,piece2;
int lSpace;
Scanner input = new Scanner (System.in);
 
System.out.println ("Enter a sentence no punctuation");
sentence = input.nextLine();
 
lSpace = sentence.indexOf("");
piece1 = sentence.substring(0,lSpace);
piece2 = sentence.substring(lspace+2);
 
String firstchar = sentence.substring (lString+1,lSpace+2).toUpperCase();
 
system.out.println(firstChar + piece2 + " " + piece1);
 
 
}
}

Enter a sentence no punctuation
hello world
Ello world

Its supposed to switch the pieces and capitalize the first letter. The result is supposed to be

World hello

Is this a complete class? You seem to have not declared lString or firstChar anywhere. I run it on my IDE and it just throws an error due to this.
Edit: You have declare firstChar but as firstchar. Watch out for this, I'll have a look through

--- Update ---

Does this make sense to you?

import java.util.Scanner;
 
public class reverseSentence {
 
    public static void main(String[] args) {
        String sentence, piece1, piece2;
        int lSpace;
 
        Scanner input = new Scanner(System.in);
 
        System.out.println("Enter a sentence no punctuation");
        sentence = input.nextLine();
 
        lSpace = sentence.indexOf(" ");
        //Selects the first word from 0 to first space
        piece1 = sentence.substring(0, lSpace);
        //Selects second word from space to string end
        piece2 = sentence.substring(lSpace + 1, sentence.length());
        //reverses the words and stores as ouput
        String output = piece2 + " " + piece1;
        //Get the first char of output as a String
        String firstChar = output.charAt(0) + "";
        //Make it uppercase
        firstChar = firstChar.toUpperCase();
        //Replace the first letter of output with the capitalised firstChar
        output = output.replace(output.charAt(0), firstChar.charAt(0));
        //Print it to console
        System.out.println(output);
    }
}

I hope this wasn't homework LOL

It wasn't homework it was my first day and we were copying the codes down and we had to copy the code.

Apparently I copied it wrong or the professor wrote it wrong.

Oh right, yeah I'm currently in my 2nd year studying it, got my main exam in it Friday. Lecturers get code wrong all the time and my 1st year professor was awful at teaching Java, luckily I taught myself LOL. Good luck! its such a simple but powerful language once you get to grips with it. If you need any tips or questions feel free to message me ;-)

Sorry, learnt my lesson

--- Update ---

Originally Posted by Norm

@rossc Please don't do the OPs work for him.
See: http://www.javaprogrammingforums.com...n-feeding.html

--- Update ---


@rossc Please don't do the OPs work for him.
See: http://www.javaprogrammingforums.com...n-feeding.html

--- Update ---


@rossc Please don't do the OPs work for him.
See: http://www.javaprogrammingforums.com...n-feeding.html

Sorry, learnt my lesson