Interview Questions - Advanced Java

69.
What are the high-level thread states?
The high-level thread states are ready, running, waiting, and dead.

70.
What value does read() return when it has reached the end of a file?
The read() method returns -1 when it has reached the end of a file.

71.
Can a Byte object be cast to a double value?
No. An object cannot be cast to a primitive value.

72.
What is the difference between a static and a non-static inner class?

A non-static inner class may have object instances that are associated with instances of the class's outer class.

A static inner class does not have any object instances.