Not all data is the same, here we discuss:

• Int, which is an integer such as 1, 2, 3, 100, 10000, etc

• Float, which is a decimal number containing up to 7 digits

• Double, which is a decimal number containing up to 15-16 digits

• Char, which is a single character

• String, which is a sequence of characters

• Boolean, a true or false, or a 1 or 0

• Array, a set of a data type in between square brackets 

  • ["Apple", "B", "1"] - An array of strings

  • [1, 2, 4] - An array of integers