In Java, "%" means remainder. It is a binary arithmetic operator that can perform division operations and obtain the remainder. The syntax is "operand 1 % operand 2". The operand of the remainder operator "%" is usually a positive integer or a negative number or even a floating point number. If a negative number participates in this operation, the result depends on whether the previous number is positive or negative.
The operating environment of this tutorial: windows7 system, java8 version, DELL G3 computer.
% in Java means remainder, which is an arithmetic operator that can implement remainder operations, perform division operations and obtain the remainder.
The remainder operator is %, which is a binary operator. Its operand is usually a positive integer or a negative number or even a floating point number. If a negative number participates in this operation, the sign of the result depends on the previous one. Whether the number is positive or negative.
For integers, Java’s remainder operation rules are as follows
Arithmetic in Java Operators are mainly used to organize arithmetic operations on numerical data. They can be divided into unary operators and binary operators according to the different operands involved in the operation.
Unary operators
There are three arithmetic unary operations, namely -, and --. See Table 1 for specific instructions.
Table 1 Unary arithmetic operations
Operator
Name
Description
Example
-
Negation symbol
Negation operation
b=-a
##Self-increment
Get the value first and then add one, or add one first and then get the value
a or a
##- -
decrement by one
First take the value and then subtract one, or first subtract one and then take the value
a-- or--a
In Table 1, -a is the inversion operation of a, and a or a-- is to add or subtract one to a after the expression operation is completed. And a or --a first adds or subtracts one to a, and then performs the expression operation.
int a = 12;
System.out.println(-a);
int b = a++;
System.out.println(b);
b = ++a;
System.out.println(b);
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The second line of the above code is -a, which inverts the a variable, and the result output is -12. The fourth line of code is to first assign a to the b variable and then add one, that is, assign the value first and then , so the output result is 12. The 6th line of code adds one to a, and then assigns a to the b variable, that is, assigning values one after another, so the output result is 14.
The output result is as shown below:
Binary operators
Arithmetic operators in Java language The function of is to perform arithmetic operations. In addition to the frequently used addition ( ), subtraction (-), multiplication (*) and division (\), there is also the modulo operation (%). Addition ( ), subtraction (-), multiplication (*), and division (\) have the same meaning as the mathematical operations we usually come into contact with. See Table 2 for specific instructions.
Table 2 Binary arithmetic operations
Operator
Name
Description
Example
Add
Find the sum of a plus b. It can also be used for String type to perform string concatenation operations
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