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How do Java’s standard arithmetic operators work?

How do Java’s standard arithmetic operators work? (Computer science one · Operators) — "Java supports the standard arithmetic operators for addition, subtracti…

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Java arithmetic operators and numeric type compatibility
Java supports addition (+), subtraction (-), multiplication (*), and division (/).
Each arithmetic operator is binary and acts on two operands, which may be literals or variables.
Multiplication and division have precedence over addition and subtraction.
Integer arithmetic includes addition, subtraction, multiplication, division, and expressions such as a + b * c.
Integer division truncates the result.
Floating-point arithmetic supports the same operators with double values.
Arithmetic can combine integer and double values, such as w = a + x.
A double result cannot be assigned directly to an int variable.
An explicit cast can assign the result to int: d = (int) (b + y).
The explicit cast truncates the value; in the example, d becomes 23.

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How do Java’s standard arithmetic operators work?

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Computer science one

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"Java supports the standard arithmetic operators for addition, subtraction, multiplication, and division using +, -, *, and / respectively. Each of these operators is a binary operator that acts on two operands, which can either be literals or other variables, and they follow the usual rules of arithmetic when it comes to order of precedence: multiplication and division are performed before addition and subtraction.\n\nint a = 10, b = 20, c = 30, d;\n\nd = a + 5;\n\nd = a + b;\n\nd = a - b;\n\nd = a + b * c;\n\nd = a * b;\n\nd = a / b; // integer division and truncation\n\ndouble x = 1.5, y = 3.4, z = 10.5, w;\n\nw = x + 5.0;\n\nw = x + y;\n\nw = x - y;\n\nw = x + y * z;\n\nw = x * y;\n\nw = x / y;\n\nYou can do arithmetic with both types:\n\nw = a + x;\n\nHowever, you cannot assign a double to an integer:\n\nd = b + y; // compilation error\n\nYou can do so with an explicit type cast:\n\nd = (int) (b + y); // though truncation occurs, d is 23"

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