In which of the following package Exception class exist?

java.lang java . io java.file java.util

In thread ,which method resumes the first thread that goes into the sleep mode?

notify wait() notify all resume()

Which of these method is used to begin the execution of a thread?

start() runThread() startThread() run()

Which of these interface must contain a unique element?

Set List Array Collection

The keyword for using interface in a class is?

implements throw extends invert