Name | Operator | Examples | Result |
---|---|---|---|
Addition | + | 1 + 3 | 4 |
2 + 4 | 6 | ||
"ab" + "cd" | abcd | ||
Subtraction | - | 5 - 3 | 2 |
2 - 2 | 0 | ||
3 - 5 | -2 | ||
Multiplication | * | 2 * 2 | 4 |
3 * 5 | 15 | ||
3 * 0 | 0 | ||
Division | / | 10 / 2 | 5 |
0 / 3 | 0 | ||
5 / 0 | Exception - cannot divide by 0. | ||
Remainder Of Division | % | 10 % 2 | 0 |
4 % 3 | 1 | ||
17 % 6 | 5 |
Explanation for Remainder Of Division
Let's start with a program that reads width and height of a rectangle and prints it's area.
Input:
Output:
Explanation
line 9 and 10
width and height are red.Double.parseDouble
is used to convert the string input to double.line 13
width and height are multiplied (via *
operator).Let's demonstrate the rest of the operators:
Input:
Output:
Notice that +
operator can be applied to both numeric and string variables.