Java Operators

Java Operators

Operators are symbols that perform operations on values. Java groups them into several categories.

Arithmetic operators

Used for math:

int sum1 = 100 + 50;
int sum2 = sum1 + 250;
System.out.println(sum2); // 400

Assignment operators

The = operator assigns a value. It combines with arithmetic in shortcuts:

int x = 10;
x += 5;  // same as x = x + 5
x -= 3;  // same as x = x - 3
x *= 2;  // same as x = x * 2
x /= 4;  // same as x = x / 4
x %= 3;  // same as x = x % 3

Comparison operators

Compare two values and return true or false:

• == equal to
• != not equal
• > greater than
• < less than
• >= greater than or equal
• <= less than or equal

int x = 5;
System.out.println(x == 3); // false
System.out.println(x != 3); // true

Logical operators

Combine conditions:

TL;DR

• Arithmetic: + - * / % ++ --.
• Assignment shortcuts: += -= *= /= %=.
• Comparison returns true or false.
• &&, ||, and ! combine conditions.