|
- What is the difference between local and instance variables in Java . . .
Existence time: Local variables are created when a method is called and destroyed when the method exits whereas instance variables are created using new and destroyed by the garbage collector when there aren't any reference to them Access: You can't access local variables, whereas instance variables can be accessed if they are declared as public
- Why must local variables, including primitives, always be initialized . . .
11 In Java, class and instance variables assume a default value (null, 0, false) if they are not initialized manually However, local variables don't have a default value Unless a local variable has been assigned a value, the compiler will refuse to compile the code that reads it
- Variable default value in Java - Stack Overflow
9 From the Java Language Specification, Java SE 8 Edition, 4 12 5 Initial Values of Variables: A local variable (§14 4, §14 14) must be explicitly given a value before it is used, by either initialization (§14 4) or assignment (§15 26), in a way that can be verified using the rules for definite assignment (§16 (Definite Assignment))
- Why are local variables not initialized in Java? - Stack Overflow
Before Java 7, instance variables are stored on the heap and local variables are found on the stack However, any object that a local variable references will be found in the heap
- java - Local variable defined in an enclosing scope must be final or . . .
2 In order to use a method's local variable inside a nested class, the variable must either be either final or "effectively final", where the latter means that the compiler can prove that that the variable's value will not change during the entire execution of the method
- java - Difference between final and effectively final - Stack Overflow
A local variable initialized with a constant is not a constant expression to the compiler You cannot use such a variable for a case in a switch case until you explicitly add the final keyword
- Java error Value of local variable is not used - Stack Overflow
1) "value of local variable p is not used" is a compile time warning 2) A Launch Error is a run-time error rather than a compile time error 3) Someone who is "really new to java" should try easier things than using platform specific code to create a Process
- java - Modifying local variable from inside lambda - Stack Overflow
Instead of incrementing a local variable in the forEach, I needed to assign an object to the local variable I solved this by defining a private inner domain class that wraps both the list I want to iterate over (countryList) and the output I hope to get from that list (foundCountry)
|
|
|