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  • Var keyword in Java - Stack Overflow
    Motivation for var keyword: Remember, that the only stated purpose of using var, according to the language designers (since JDK 10+), has been the point to beautify the code and make it more readable (which, I personally think, is a non-sense as having "var" in Java, is worse than having explicit types, and in many ways so)
  • What are assertions in Java and when should they be used?
    Assertions (by way of the assert keyword) were added in Java 1 4 They are used to verify the correctness of an invariant in the code They should never be triggered in production code, and are indicative of a bug or misuse of a code path They can be activated at run-time by way of the -ea option on the java command, but are not turned on by
  • What is the meaning of this in Java? - Stack Overflow
    this is a keyword in Java Which can be used inside method or constructor of class It(this) works as a reference to a current object whose method or constructor is being invoked this keyword can be used to refer any member of current object from within an instance method or a constructor Check the examples in the link for a clear understanding
  • What is the Java ?: operator called and what does it do?
    In particular, if Java ever gets another ternary operator, people who use the term "conditional operator" will still be correct and unambiguous - unlike those who just say "ternary operator" Yes, the phrase "ternary operator" has stuck - my answer is part of an effort to "unstick" it, just as I try to correct the claim that "objects are passed by reference"
  • java - What is the volatile keyword useful for? - Stack Overflow
    This answer is correct, but incomplete It omits an important property of volatile that came with the new Java Memory Model defined in JSR 133: that when a thread reads a volatile variable it sees not only the value last written to it by some other thread, but also all other writes to other variables that were visible in that other thread at the time of the volatile write
  • java - When should I use this in a class? - Stack Overflow
    In Java setter methods, we commonly pass in an argument with the same name as the private member variable we are attempting to set We then assign the argument x to this x This makes it clear that you are assigning the value of the parameter "name" to the instance variable "name"
  • How does the final keyword in Java work? (I can still modify an . . .
    The final keyword in java is used to restrict the user The java final keyword can be used in many context Final can be: variable ; method ; class ; The final keyword can be applied with the variables, a final variable that has no value, is called blank final variable or uninitialized final variable It can be initialized in the constructor only
  • Why does Java have transient fields? - Stack Overflow
    The transient keyword in Java is used to indicate that a field should not be part of the serialization (which means saved, like to a file) process From the Java Language Specification, Java SE 7 Edition, Section 8 3 1 3 transient Fields: Variables may be marked transient to indicate that they are not part of the persistent state of an object


















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