Adding Logic to Java

As shown in Figure 26.11, both the if and else statements use braces {} to mark the beginning and end of the blocks of code they condition. The else statement is optional. For a complete list of logical operators, see Table 26.3:

Figure 26.11: Java application using logical operators.

Notice that the equal test is performed with two equal signs (==). This is because a single equal sign is an assignment, meaning that it assigns a value to the variable to its left. One equal sign cannot be used as a test.

Table 26.3: Java Logical Operators

==	Equal
!=	Not Equal
<	Less than
>	Greater than
<=	Less or equal
>=	Greater or equal