Chapter 7 of the document covers Java operators, including arithmetic, comparison, logical, conditional, and assignment operators, detailing their functions and examples. It also explains control structures such as loops (for, while, do-while) and selective structures (if statements, switch statements). The content is presented by Nuzhat Memon and includes practical examples and syntax.

1. Chapter 7
Java Basics
(Part 2 – Operators in java)
Presented by nuzhat memon
Operat
ors
1.
Arithme
tic
Operato
rs
2.
Compari
son
operato
rs
3.
Logical
Operato
rs
4.
Conditio
nal
operato
rs
5.
Assignm
ent
operato
r

2. Chapter 7
Java Basics
(Part 2 – Operators in java)
Presented by nuzhat memon
Operator
s
1.
Arithmetic
Operators
2.
Comparison
operators
3. Logical
Operators
4.
Conditional
operators
5.
Assignment
operator

3. Presented by Nuzhat Memon
Operators
+ Operators are special symbols used to build an expression.
3
Operators
1.
Arithmetic
Operators
2.
Comparison
operators
3. Logical
Operators
4.
Conditional
operators
5.
Assignment
operator

4. Presented by Nuzhat Memon 4
Basic arithmetic
operators are +, – , *,
/ , % (Modulus)
All these operators are
binary, they take 2
operands.
Used for byte, short, int,
long, float, double and
char (treated as int)
Arithmetic Operators
Operator Meaning Eg
+ Addition 2+8
– Subtraction 2-8
* Multiplication 2*8
/ Division 8/2
% Reminder 8%3
++ & -- is known
as unary operators
++ is increment
operator (which
adds 1) and -- is
decrement
operator (which
subtracts 1)
Increment / Decrement
Operators
++x pre-increment
--x pre-decrement
x++ post -increment
x-- post-decrement
Comparison
operators are
known as
relational
operators.
The result of
expression is
boolean; either
true or false
Comparison Operators
Operator Meaning
> Greater than
< Less than
>= Greater than or equal to
<= Less than or equal to
== Equal to
!= Not equal to
Logical operators
known as boolean
operators.
Logical operators:
AND, OR, XOR
(Exclusive OR),
NOT
Logical Operators
Operator Sign Use
AND && Used to combine two values
OR || Used to combine two values
XOR ^
It returns true only if operands
are different
NOT !
Operant is true, result is false
& vice versa
Also known as ternary
operator.
Conditional operator
uses 3 operands.
It uses two symbols ?
and : in the expression.
Syntax : (boolean-expr)
? (expr1) : (expr2)
To assign a value to
variable by using
the assignment
operator ‘=’
Syntax: <variable>
= <expression>;
Variable on lefthand
side of expression is
lvalue (location in
memory)
Conditional
Operator
Operators
Arithmetic
Operator
Increment and
Decrement
Operator
Comparison
Operator
Logical
Operator
Assignment
Operator
Operator
Operand1 Operand2
1
4
2
4
8
0
8/2
8%2

5. Presented by Nuzhat Memon
If the conditional ternary is
next = (N%2==0)?(N/2):(3*N+1); where N=7 then what will be the value
of variable next?
(A) 22 (B) 7 (C) 3.5 (D) 0
5
3*N+1
N%2==0
N/2
true false
N=7
7%2==0
false
3*7+1 =22

6. Presented by Nuzhat Memon
While using shorthand version of assignment, it is defined as a+=b where a
is 7 and b is 8 then what will result of a ?
(A) 8 (B) 49 (C) 14 (D) 15
6
<variable>=<variable><operator><expression> <variable><operator> = <expression>;
a=a+b a+=b
a=a-b a-=b
a=a*b a*=b
a=a/b a/=b
a+=b
a=a + b
=7+ 8

7. Presented by Nuzhat Memon
Thanks!
Any questions?
You can find me at:
+ nuzhatmemon.com
+ nuzhat.memon@gmail.com
7

8. Presented by Nuzhat Memon 8
Branches/decision/selective
Control Structures
Do while loop
Looping
For loop While loop
If statement Switch case
In general, the statements are executed sequentially, one by one. Sometimes,
program logic needs to change the flow of this sequence.
The statements that enable to control the flow of execution are considered as
control structures
Control Structures

9. Presented by Nuzhat Memon 9
Entry controlled or pre-test
loop constructs.
It is used when numbers of
iterations are pre-defined.
Entry controlled or pre-test
loop constructs.
It is used when number of
iterations are not
pre-determined.
Exit controlled or post-test
loop constructs.
Here, statements of loop are
executed at least once.
Do while loop
Looping
For loop While loop
for (initialize; condition; iteration){
statements;
}
//initialize
while (condition){
statements;
increment/decrement statement;
}
//initialize
Do{
statements;
increment/decr statement;
} while (condition);
 Loops are used to repeat a sequence of statements over and over until some condition occurs.
 Loop are executed if condition is true.
 Java supports 3 types of looping constructs:
Looping

10. Presented by Nuzhat Memon
Brain Stroming Session
Which of the following is compiled error free?
(A)for(;;){int i=7}; (B) while (1) { int i=7};
(C) while (true){int i=7} (D) All of these
What will be output of following program?
class abc{
public static void main(string[] S){
for(int i=0;i<10;i++){
SYSTEM.out.println(i);
}
}
}
(A) error (B) i (C) Display 1 to 10 (D) 1,2,3,…….10
10

11. Presented by Nuzhat Memon
Statement (selective structure)
Control structure branches are used to choose among two or
more possible courses of action, is called as selective structure
(1) IF STATEMENT
+ Used in a program to take one of two alternative coursed of
action, depending upon Boolean valued expression.
(2) SWITCH STATEMENT
+ Used when there are many alternative actions to be taken
depending upon the value of a variable or expression.
+ Test expression should be of the type byte, char, short or int
or enum
11
if(condition){
statements;
}
Else{
statements;
}
Switch (option){
case 1:
statement1;
break;
case 2:
statement2;
break;
default:
statementN;
}

12. Presented by Nuzhat Memon 12
Entry controlled or pre-test
loop constructs.
It is used when numbers of
iterations are pre-defined.
Entry controlled or pre-test
loop constructs.
It is used when number of
iterations are not
pre-determined.
Exit controlled or post-test
loop constructs.
Here, statements of loop are
executed at least once.
Do while loop
Looping
For loop While loop
for (initialize; condition; iteration){
statements;
}
//initialize
while (condition){
statements;
increment/decrement statement;
}
//initialize
Do{
statements;
increment/decr statement;
} while (condition);
Control structure branches are used to choose among two or more possible
courses of action, is called as selective structure
statement

13. Presented by Nuzhat Memon
Which statement is executed if the value of Boolean expression is true?
If (boolean expression)
{
<statement1>
}
else
{
<statement2>
}
(A) statement2 (B) error message (C) statement1 (D) statement3
13

14. Presented by Nuzhat Memon
Statement
BREAK STATEMENT
+ Used to transfer the control outside switch/loop
structure.
+ It is used to exit the loop.
+ It is jumps outside the nearest loop containing
this statement.
CONTINUE STATEMENT
+ It is used to skip the following statement in a loop
and continue with the next iteration.
14
for(){
if(condition){
break;
}
statements;
}
for(){
if(condition){
continue;
}
statements;
}