Constants - Variables - Data Types

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There are 9 types of data types. These include boolean, string, integer, double, decimal, character, byte, float and long.

  • Boolean is a binary value, being either true or false.
1 bool test = true;
  • String is used for storing characters in word form.
1 "hello world"
  • Integer is used to store whole numbers (32 bit values).
1 457568368
  • Double is used to store numbers where there are numbers before and after the decimal point.
1 3.3
  • decimal is used for numbers only after the decimal point.
1 .3
  • Character is used to store single letters.
1 'A'
  • Byte is used to store a byte( eight 1's or 0's).
1 00101101
  • Float is used to store a set number of digits after a decimal place.
1 3.0000000000
  • Long integer is also used to store whole numbers (However these are 64 bit values).
1 7846354759340276482