how to check if the input is number in java code example

Example 1: how to check a number in string

To find whether a given string contains a number,
convert it to a character array and find whether 
each character in the array is a digit using the isDigit() 
method of the Character class

Example 2: how to check whether input is string or not

num = input("Enter your number ")

print("\n")
if num.isdigit():
    print("User input is Number ")
else:
    print("User input is string ")