This document discusses decision making and control statements in Java, specifically the if-else statement. It provides examples of how if-else statements can be used to implement logic that makes decisions based on conditions, such as checking if a variable equals a value and performing different actions depending on whether the condition is true or false. Real-world examples are given, such as deciding to make pasta or sandwiches depending on whether friends are coming over. The syntax of if-else statements is also demonstrated.

1. J A V A - B A S I C S
Decision Making-Introduction

2. Control Statements.
 Which control a certain situation.
 If –else and while are included in them.

3. Decision Making
 To implement a specific logic, one must take many
small decisions to make it happen.
 Shopping examples.

4. Decision Making
 To ensure right choice and decision one uses
if and else statement.

5. IF
 It is a single selection statement. Which provides us
to code what should happen when specific condition
occurs.
 Like you want your program to print anything if a=2
then it will be like
 If(a==2)
 Print “hello”

6. IF
 Real time example
 If your friend is coming over “then”
you will make pasta.
if( friend is coming)
make pasta;

7. IF-else Double Selection Statement
 If decides what should happen if specific situation
happens.
 Else decide what should happen if that situation
doesn’t occur

8. IF-Else Example
 Like if you want to print some thing if a=2 and else
you want a=0
 Like
 if(a==2)
 Print “hello”
 Else
 a=0

9. Real Life Example
 Like if your friends are coming over then you would
make pasta otherwise you would make sandwiches
 If(friends coming)
make pasta
Else
make sandwiches

10. Syntax
if (a==2)
{
System.out.println(“hello”);
}
Else
{
a=1;
}