Check if input is a valid Binary Number

Data type is only one way we can verify information in Java. If we know some of the expected features of the input we can test for those features. In this question, you should consider what all binary numbers have in common.

Write a method isBinary$()$ that takes an integer as input, and returns a boolean, which is true if the number is binary, or a false otherwise.

Example features of input data:

How many characters exist?

Are the characters numeric?

Are the characters organized in a specific way?

Expected Output Description:

length of input

true or false

Expected Output Example:

$8$

true