1.3 Expressions and Assignment Statements

Expressions are combinations of variables, operators, and method calls that evaluate to a single value. Assignment statements are used to store the result of an expression in a variable.

Expressions

Expressions can involve arithmetic operations, comparisons, or more complex calculations.


int x = 5;
int y = 3;
int sum = x + y;  // sum is now 8
boolean isGreater = x > y;  // isGreater is true

Assignment Statements

Assignment statements use the = operator to assign a value to a variable.


int a;  // Declaration
a = 10;  // Assignment
int b = 20;  // Declaration and assignment in one statement

What is the value of x after the following code is executed? int x = 5; x = x + 3;

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