Decisions - Java Concepts - page 254

{
double newBalance = balance - amount;
balance = newBalance;
}

A statement such as

balance = balance - amount;

is called a simple statement. A conditional statement such as

if (x >= 0) y = x;

is called a compound statement. In Chapter 6 , you will encounter loop statements;
they too are compound statements.

The body of an if statement or the else alternative must be a statementȌthat is, a
simple statement, a compound statement (such as another if statement), or a block
statement.

S YNTAX 5.1 The if Statement

if (condition)
statement
if (condition)
statement 1
else
statement 2

Example:

if (amount <= balance)
balance = balance - amount;
if (amount <= balance)
balance = balance - amount;
else
balance = balance - OVERDRAFT_PENALTY;

Purpose:

To execute a statement when a condition is true or false

184