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COMPUTER SOFTWARE APPLICATION - CITS

LESSON 85 - 93 : JAVA Program Flow Control

Java Control Statements / Control Flow in Java

Java compiler executes the code from top to bottom. The statements in the code are executed according to the
order in which they appear. However, Java provides statements that can be used to control the flow of Java code.
Such statements are called control flow statements. It is one of the fundamental features of Java, which provides
a smooth flow of program.

Java provides three types of control flow statements.
1 Decision Making statements
• if statements

• switch statement
2 Loop statements

• do while loop
• while loop
• for loop

• for-each loop
3 Jump statements

• break statement
• continue statement
Decision-Making statements:

As the name suggests, decision-making statements decide which statement to execute and when. Decision-
making statements evaluate the Boolean expression and control the program flow depending upon the result of
the condition provided. There are two types of decision-making statements in Java, i.e., If statement and switch
statement.

1W If Statement:
In Java, the “if” statement is used to evaluate a condition. The control of the program is diverted depending upon
the specific condition. The condition of the If statement gives a Boolean value, either true or false. In Java, there
are four types of if-statements given below.
1 Simple if statement

2 if-else statement
3 if-else-if ladder

4 Nested if-statement
Let’s understand the if-statements one by one.
1 Simple if statement:

It is the most basic statement among all control flow statements in Java. It evaluates a Boolean expression and
enables the program to enter a block of code if the expression evaluates to true.

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