Java Input Output - Quiz Explanation

The answers you selected are indicated below, along with text that explains the correct answers.

1.	The top-level, abstract stream classes in Java are Please select the best answer.
	A.	`ReadStream` and `WriteStream`
	B.	`InputStream` and `OutputStream`
	C.	`Field` and `Stream`
	The correct answer is B: `InputStream` and `OutputStream`. Field and Stream will help you with fly-fishing, but not with Java.

2.	Instances of class `DataInputStream` can Please select the best answer.
	A.	Read only generic bytes from a resource
	B.	Read specific, simple data types from a resource
	C.	Read only generic char from a resource
	The correct answer is B. `DataInputStream` contains methods that can read Java data types.

3.	The standard input is represented by the variable Please select the best answer.
	A.	`System.in`
	B.	`standardInput`
	C.	`System.keyboard`
	The correct answer is A. The standard input is represented by `System.in`.