2.Java (a)   keyword is used to declare a variable that can hold an 8-bit data values.

3. Java (a)   keyword is used to declare a variable that can hold unsigned 16-bit Unicode characters

4.Java (a)   keyword is used to declare a variable that can hold a 64-bit floating-point numbers.

5. Java (a)   keyword is used to declare a variable that can hold a 32-bit signed integer.

6.Java (a)   keyword is used to declare a variable that can hold a 64-bit integer.

7.Java (a)   keyword is used to indicate that a reference does not refer to anything. It removes the garbage value.

8.Java (a)   keyword is used to return from a method when its execution is complete.

9.Java (a)   keyword is an access modifier. It is used to indicate that an item is accessible anywhere. It has the widest scope among all other modifiers.

10.Java (a)   keyword makes classes and interfaces available and accessible to the current source code.