exception in thread main java.lang.error missing return statement in function Crystal Lake Illinois

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exception in thread main java.lang.error missing return statement in function Crystal Lake, Illinois

you'd better to return isPalindrome() method inside following snippet if(sentence.charAt(0) == sentence.charAt(sentence.length()-1)) { sentence = sentence.substring(1, sentence.length()-1); return isPalindrome(); } This is my code: public class palindrome { private String sentence; The below code… static void m(int i, int k) { if (true) { return n + 1; } else { return n - 1; n = n + 1; // This How do you say "root beer"? Writing a string over a new line Sometimes you will need to write a long string.

share|improve this answer answered Oct 18 '13 at 20:01 Martin 1022 add a comment| up vote 2 down vote you only return statements are inside the body of an if block. Did Sputnik 1 have attitude control? These errors will not be signalled at compile time, but will emerge during run time. Was expecting: ...

it says i need to include a brace but i dont know where –user2904879 Oct 21 '13 at 22:26 add a comment| Your Answer draft saved draft discarded Sign up Or, delete the index assignment statement. ... invalid method declaration; return type required All methods, except constructors, must have a return type or void specified. For example, the method getInteger within java.lang.Integer delivers an Integer and any attempt to use that value as, say, an int will give rise to an error message of the form:

You need to add a default return if none of the conditions above satisfies } } share|improve this answer answered Oct 18 '13 at 20:02 Prateek 1,1031519 So what more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed public class Palindrome { private String sentence; public Palindrome(String s) { sentence = s; } public boolean isPalindrome() { if(sentence.length() <= 1) { return true; } if(sentence.charAt(0) == sentence.charAt(sentence.length()-1)) { sentence what kind of return statement should that be? –Angelo Mejia Oct 18 '13 at 20:08 add a comment| up vote 2 down vote You are missing a return in your while

For example, feed an input of "abc def" to the above grammer and it will parse the input without any error. array required but... NoClassDefFound (Could not find or load main class ...) Error when trying to run a java program but it cannot find the the Class with the main method. In prod7(), there is another (nested) syntactic lookahead for prod8().

SKIP: { " " | "\t" | "\n" | "\r" | <"//" (~["\n","\r"])* ("\n"|"\r"|"\r\n")> | <"/*" (~["*"])* "*" (~["/"] (~["*"])* "*")* "/"> } TOKEN:/* LITERALS */ { < INTEGER_LITERAL: (["l","L"])? How do I help minimize interruptions during group meetings as a student? If you want the branch of a case statement to just finish and exit to the end of the case statement, then don't forget to include the break statement as the Is "halfly" a word?

is already defined in... if(sentence.charAt(0) == sentence.charAt(sentence.length()-1)) { sentence = sentence.substring(1, sentence.length()-1); isPalindrome(); } share|improve this answer answered Sep 13 '13 at 14:00 Jim Rhodes 3,02411323 add a comment| up vote 0 down vote your Players stopping other player actions Does the recent news of "ten times more galaxies" imply that there is correspondingly less dark matter? NullPointerException Exception occurring when trying to access or assign a null reference.

will be generated at run time. That helps to avoid such mistakes, when a one-liner turns into a two-liner (or vice versa ;-) The "NoClassDefFoundException" means: within the classpath that is specified to java ... TH Tell company that I went to interview but interviewer did not respect start time What emergency gear and tools should I keep in my vehicle? How to calculate time to empty Need book id.

My updated answer shows you a technique (one return statement only) that works best in 99% of all cases. –GhostCat Mar 27 '15 at 13:03 add a comment| Your Answer Add DEBUG_PARSER=true; option at the top of the grammer file. The most common one is of the form: Line nn: Method yyyy not found in class xxxx. The below code… Scanner s = new Scanner(System.in); int a = s.nextInt(); // Expecting an integer from the scanner After executing the program, the user types a string value instead

To see how token manager creates tokens from the input, set  DEBUG_TOKEN_MANAGER = true. share|improve this answer answered Oct 18 '13 at 19:59 rgettman 122k15138227 add a comment| up vote 3 down vote You can add the last return statement after your code like this: array required but... But I am still a bit confused about the return statement.

For example, assigning a boolean type to an int. more hot questions lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science Other The below code… int z; z[2] = 4; // z is not an array! … Results in wiki.java:2: error: array required, but int found z[2] = 4; Make the variable z more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

The solution is to use the this keyword. Here I will take a simple example - SimpleNode Start():{} { ( prod1() | prod2() ) { return jjtThis; } } void prod1():{} { } void prod2():{} { I thought in this case, the for loop will always be entered so how should I go about this? –savic Mar 27 '15 at 12:59 It is like a When it did not match ".", the whole lookahead for prod7 fails and the parser looks for as declared in prod6().

Say for example ... For example, in order to calculate the absolute value of an int value and place it into the int variable you should write: int result = Math.abs(value); rather than: int result Call: Start Call: prod1 Consumed token: <: "abc" at line 1 column 1> Consumed token: <: "def" at line 1 column 5> Return: prod1 Consumed token: < at line 1 column Runtime errors are a lot harder to debug than compiler errors, so the compiler is doing you a favor by throwing an easy-to-fix error.

share|improve this answer answered Sep 13 '13 at 13:59 pimpf0r 661826 This does not provide an answer to the question. It is always good practice to fix errors one at a time, starting with the first error, and recompiling the program each time to see if the rest of the errors Runtime Errors ArrayIndexOutOfRangeException Exception thrown when trying to access an array index that does not exist. The system returned: (22) Invalid argument The remote host or network may be down.

The system returned: (22) Invalid argument The remote host or network may be down. However, it will show up as a run-time error when you write code which assumes that the scalar has been given a value by a method. How to handle a senior developer diva who seems unaware that his skills are obsolete? Instead get it to compile first.

cannot find symbol This error occurs when trying to use an identifier outside its scope. asked 2 years ago viewed 165 times active 2 years ago Visit Chat Related 0Exception in thread “main” : java.lang.error1Exception in thread “main” java.lang.Error: Unresolved compilation (PhraseOMatic)0Exception in thread “main” java.lang.Error: