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What are the synchronized methods and synchronized statements in java?
Synchronized Methods are methods that have the keyword synchronized in the method signature. Synchronized statements are pieces of java code that are surrounded by brackets which have the keyword synchronized qualifying them. Both cases mean that - only one thread will be able to access the method or the statement that is synchronized
What method in Java cannot be overridden?
Methods which are declared final cannot be overridden.
Can a method be static and synchronized?
Yes. In Java methods can be static and synchronized. Static methods access other static members in the class. Static in case of inheritance are treated as non - static. Synchronized methods are those which have dedicated thread attached to it and no other can access until currrent thread leaves the control from it.
How you make shared and synchronized variable in java thread?
A Variable that is shared as well as synchronized cannot be created in Java. These two terms are mutually exclusive and a variable that is synchronized in java cannot be shared and vice versa
What is a specifier?
a specifier tells the JVM how to treat a particular class,method and variable while executing the program. For example, final classes cannot be extended and final methods cannot be overriden and final variables cannot be changed once declared. Likewise,static methods and variables can be accessed without having to instantiate an object for their class
What is the relationship between inheritance methods and the keyword final?
They are inversely related. That is: If you declare a method as final you cannot overridden in the child class If you declare a class as final you cannot inherit it in any other class.
What are the usages of keyword final in java?
It's a built-in keyword that defines an entity that cannot be later modified. It can be used in different aspects within your code (like setting a 'final' class, method (function), or variable).
What if a final keyword is applied to a function?
The final keyword in JAVA means that the class can no longer be derived, i.e. it cannot be used as a base class for a new child class.If you declare a method as final, this method cannot be overridden in any of the child class that may extend this class.
Why final method are used?
Final methods in Java are used to prevent method overriding, ensuring that the behavior of a method remains consistent and cannot be altered by subclasses. This is particularly useful for maintaining the integrity of critical methods or when implementing security measures. By declaring a method as final, developers can also improve performance, as the compiler can optimize calls to these methods. Overall, final methods promote a clear design by restricting the extensibility of certain class behaviors.
Can you synchronize a class?
No. If someone refers to a "synchronized class," they are generally talking about a class in which all methods are thread-safe.
Which collection classes allows you to grow or shrink its size and provides indexed access to its elements but whose methods are not synchronized?
ARRAYLIST
If 2 different threads hit 2 different synchronized methods in an object at the same time will they both continue?
Of course. The synchronized keyword will ensure that only one thread will ever be allowed to execute a method at once. If two threads are attempting to access two different methods, then each method only has one thread executing it.
