Cheatography
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Data Typesbyte | 8 bits | short | 16 bits | int | 32 bits | long | 64 bits | boolean | 1 bit | char | 16 bit unicode | float | 32 bit decimal | double | 64 bit decimal |
Byte (8 bits/1 byte)-128 to 127 | -27 to 27 -1 | Default value is : 0 | Byte data type is used to save space in large arrays, mainly in place of integers, since a byte is four times smaller than an int |
Short (16 bits/2 bytes)-32,768 to 32,767 | -215 to 215 -1 | Short data type can also be used to save memory as byte data type. A short is 2 times smaller than an int |
int (32 bits/4 bytes)-231 to 231-1 | default data type |
Long (64 bits/8 bytes)Default value is : 0L | long Variable_Name = Value_L; |
| | Boolean (1 bits)true and false | Default value is : false |
Char (16 bits)Unicode character | char a = 'A'; | char japanese = "\u....." |
Double and FloatDecimal number | Double | 64 bits/ 8 bytes | Float | 32 bits / 4 bytes | mydouble = 0.1d | doublesci = 1.23e2 (scientific notation) | myfloat = 0.1f |
| | Assignation OperatorSign that use to determine data by using equal sign (=)
Ex. int x = 20;
x = 2 + 3 + 4; |
Arithmetic Operatora=30 | b=15 | + | Addition | a+b = 45 | - | Subtraction | a-b = 15 | * | Multiplication | a * b = 450 | / | Division | a / b = 2 | % | Modulus | a % b = 0 | ++ | Increment | Increases the value of operand by 1 Ex. b++ = 16 | -- | Decrement | Decreases the value of operand by 1 Ex. b-- = 14 |
Relational Operator== | equal to | != | not equal to | > | grater than | < | less than | >= | grater than or equal to | <= | less than or equal to |
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