Presentation of java character set . It includes following topics- Introduction to java fundamentals Introduction to character set -ASCII & UNICODE To watch full lecture kindly click on the link below. https://www.youtube.com/watch?v=2_JkgxXzkMI

1. WELCOME
TO
TENDERFOOT EDUTECH
TUTORIALS

2. JAVA Series For
Class 9th & 10th
I am
Aakriti Bhardwaj

3. JAVA
FUNDAMENTALS

4. JAVA FUNDAMENTALS
JAVA
Fundamentals
Character Set Tokens
Data
Types
Fundamentals represent the basics of a language
with the help of which we can write a basic computer
program.

5. WHAT IS A CHARACTER SET?
A character set is the set of valid characters that a language
can recognize. It can be a letter, a digit , a symbol or some
control characters such as backspace, tab or newline.
• A-Z(uppercase)
• a-z(lowercase)
• Alphabets from other universal languages
Alphabets
• 0-9Digits
• _ $ etc.
Special
Symbols
• n- for new line
• t for tab spaces
• b for backspace etc.
Escape
Sequences

6. ASCII & UNICODE CHARCTER SETS
 We know computer understands only binary codes
i.e. codes of 0’s and 1’s.
 So numbers like 65,32,46 etc. can be converted to
binary code. e.g.
 65 10(100001)2

7. ASCII AND UNICODE CHARCTER SETS
 You might be thinking how can we convert letters like
ABCDEF…. into binary code.
 Every single key on the keyboard has number associated
to it
 If we press `A` then its decimal ASCII code is 65.Now we
can convert decimal to binary to make it computer
readable and understandable.
 65 10(100001)2
 ASCII supports 128 characters
ranging from 0-127
 ASCII takes 1 byte of memory
space

8. ASCII AND UNICODE CHARCTER SETS
ASCII CODES

9. ASCII AND UNICODE CHARCTER SETS
 ASCII Codes can represent 128 characters (alphabets(a-
z, A-Z), digits(0-9), symbols, escape sequences)
 But we know that java supports alphabets and symbols
from other languages too like Greek , Arabic, Armenian
etc.
 To support characters from all the languages UNICODE
Character set is used.
 Unicode can support up to 256 character codes ranging
from 0-255.
 First 0-127 character codes are same as that of ASCII
codes.
 UNICODE takes 2 bytes of memory space.

10. ASCII AND UNICODE CHARCTER SETS
UNICODES
Unicode can support up
to 256 character codes
ranging from
0-255.
First 0-127 character
codes are same as that
of ASCII codes.

11. THANKS
FOR WATCHING