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    <p>I'd try a simpler approach, in which you hold an array of characters that you can change based on an input. This is an overal description of the idea:</p> <pre><code>char guess[] = {'_', '_', '_', '_', '_', ' ', '_', '_', '_', '_', '_'}; // It's "Hello World" :) if(input == answer.getCharAt(inputIndex)) guess[inputIndex] = answer.getCharAt(inputIndex); //replace the underscore with the correct character else //Add it to a list of used characters, ignore it or do as you've been asked to </code></pre> <p>In your case, create this <code>guess</code> array by invoking <code>answer.toCharArray()</code> where <code>answer</code> is the string that has the correct word. You'll want to replace all the characters in that string with underscores by using <code>replaceAll("[A-Za-z0-9]", "_")</code> (just remember to keep the original answer too). The first parameter is a regular expression that means "The group of All characters from A to Z, from a to z and from 0 to 9", you'll want to check up some <a href="http://en.wikipedia.org/wiki/Regular_expression" rel="nofollow">Regular Expressions</a> to get used to them, and trust me, you'll use them more sooner than later.</p> <p>Then, you'll just want to replace <code>guess[i]</code> with <code>answer.getCharAt(i)</code> everytime a guess is done correctly, avoiding the tedious work of building a string character by character which can be tricky.</p> <p>This is a brief description of a different approach, since it's an assigment you can decide if you want to try it or not and the general implementation is up to you. I'll just describe an idea.</p>
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    1. POJava Hangman - replacing underscore with character
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    1. COwould i have to make char guess[] for every word of mine?
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    2. COalso wha is inputIndex?
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    3. CO`inputIndex` is just a variable that determines the index of the guess. When you make a guess, each character you try is associated to a particular position in the guessword. For example, if you try `A` in the 3rd space, `inputIndex` is 2 (the array starts at 0). Regarding the `guess` array, you can have one and assign it the current word like `guess = createGuessArray(word)` where `createGuessArray` is a method that replaces the characters for underscores and returns that "masked" guessword turning it into a char array with `toCharArray()`.
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