If statement using == gives unexpected result [duplicate]

by

You need to use String.equals(), not ==. == checks if two Object references refer to the same Object:

if("s".equals(word) || "t".equals(word) || ...

From section 15.21.3 Reference Equality Operators == and != of the Java Language Specification 3.0:

While == may be used to compare references of type String, such an equality
test determines whether or not the two operands refer to the same String
object. The result is false if the operands are distinct String objects, even if
they contain the same sequence of characters. The contents of two strings s and t
can be tested for equality by the method invocation s.equals(t).

More Related Contents:

  1. Is Java "pass-by-reference" or "pass-by-value"?
  2. get Index of last Element in list without using lastIndexOf() or any other Java/String- Methods [closed]
  3. How to fix “Method in class cannot be applied to given types” error?
  4. When is the finalize() method called in Java?
  5. How to achieve method chaining in Java?
  6. Why doesn’t Mockito mock static methods?
  7. Should private helper methods be static if they can be static
  8. What does .class mean in Java?
  9. Why can’t I declare static methods in an interface?
  10. How to call a method in another class of the same package?
  11. What does the registerNatives() method do?
  12. Advantage of set and get methods vs public variable [duplicate]
  13. java how expensive is a method call
  14. Return Type of Java Generic Methods
  15. Return multiple values from a Java method: why no n-tuple objects?
  16. What does the return keyword do in a void method in Java?
  17. Optional Methods in Java Interface
  18. Can non-static methods modify static variables
  19. What does ‘public static void’ mean in Java?
  20. Varargs Java Ambiguous Call
  21. Java Inheritance – calling superclass method
  22. Final arguments in interface methods – what’s the point?
  23. How can I create a Java method that accepts a variable number of arguments?
  24. Naming conventions for Java methods that return boolean
  25. Can methods in java be nested and what is the effect? [closed]
  26. method in class cannot be applied to given types
  27. java.lang.NullPointerException with boolean
  28. Can there exist two main methods in a Java program?
  29. Abstract methods in Java
  30. If a synchronized method calls another non-synchronized method, is there a lock on the non-synchronized method

Leave a Comment