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Start your free trialMatthew Rozmajzl
556 Pointsjava.util.NoSuchElementException No clue why this is happening
Don't what what the problem is here
public class Game{ private String mAnswer; private String mHits; private String mMisses;
public Game(String answer){ mAnswer = answer; mHits = ""; mMisses = ""; }
public boolean applyGuess(char letter); boolean isHit = mAnswer.indexOf(letter) >= 0; if (isHit){ mHits += letter; } else { mMisses += letter; } return isHit; }
5 Answers
Cindy Lea
Courses Plus Student 6,497 PointsMy guess is your scope for multiple variables are wrong.
For this line: public Game(String answer){ mAnswer = answer; mHits = ""; mMisses = ""; } mAnswer & mMisses are not defined in the scope?
Anne Xu
11,572 PointsTry adding another bracket } at the end of your code, that worked for me.
Alistair Mackay
7,812 PointsYeah, I struggled with the no "NoSuchElementException" for a while (Still do on occasion).
Basically, it's a typo in your java class. They tend to happen in these exercises because we skip compiling our code before goin into java-repl.
java-repl will load your code regardless of typos so if there is a minor mistake in your code it won't pick up until you try to to create (instantiate) your class in Java-repl.
Matthew Rozmajzl's code:
public class Game {
private String mAnswer;
private String mHits;
private String mMisses;
public Game(String answer) {
mAnswer = answer;
mHits = "";
mMisses = "";
}
// There is a typo on the following line:
public boolean applyGuess(char letter);
// End of typo
boolean isHit = mAnswer.indexOf(letter) >= 0;
if (isHit) {
mHits += letter;
} else {
mMisses += letter;
}
return isHit;
}
//There should be the end of a bracket between these comments.
//bracket should have gone above.
I messed up because I forgot to include a return statement. If you're really stuck run the below code.
PowerlessCube's Code:
public class Game {
private String mAnswer;
private String mHits;
private String mMisses;
public Game(String answer) {
mAnswer = answer;
mHits = "";
mMisses = "";
}
public boolean applyGuess(char letter) {
boolean isHit = mAnswer.indexOf(letter) >= 0;
if (isHit) {
mHits += letter;
} else {
mMisses += letter;
}
/* I was missing the return statement as the exercise may have glossed
over this but due to Java's statically typed form this function was
expecting to return a boolean answer. Returning our 'isHit' fixes the
problem.
*/
return isHit;
}
}
java-repl code:
java> :load Game.java
Loaded source file from Game.java
java> Game game = new Game("treehouse");
Game game = Game @6a753a7f // how your initialised class is stored on the computer.
game.applyGuess('t');
java.lang.Boolean res1 = true; // matches one of our letters.
game.applyGuess('z');
java.lang.Boolean res2 = false // doesn't match on our letters.
I hope the above helps you spot these sort of mistakes in future.
Sachveer Gill
1,947 PointsI have the same issue after repeating all the steps as mentioned in the video. I think something isn't right.
I have this as the following and am getting an error: public class Game{
private String mAnswer; private String mHits; private String mMisses;
public Game(String answer){ mAnswer = answer; mHits = ""; mMisses = "";
}
public boolean applyGuess(char letter){ boolean isHit = answer.indexOf(letter) >= 0; if(isHit){ mHits += letter; }else { mMisses += letter; } return isHit;
} }
Anne Xu
11,572 PointsSachveer Gill, if you change your answer.indexOf into mAnswer.indexOf, then it should work. I hope this helps!
Kendall Rundquist
9,975 PointsOn your applyGuess method you put a semicolon instead of an opening bracket after your parameters:
public boolean applyGuess(char letter); should be public boolean applyGuess(char letter) {
Anne Xu
11,572 PointsAnne Xu
11,572 PointsTry adding another bracket } at the end of your code, that worked for me.