Literals in Java

Literals in Java

Literals in Java

Literals is an identifier whose value is fixed and does not change during the execution of the program.

Types of Literals

Classification of Literals

Integer Literals

Integer Literals are numbers that has no fractional pars or exponent. It refers to the whole numbers. Integers always begin with a digit or + or -.

We can specify integer constants in

  • Decimal
  • Octal
  • Hexadecimal

Decimal Integer Literals

It consists of any combination of digits taken from the set 0 to 9.

Example:
int a = 100;   //Decimal Constant
int b = -145   // A negative decimal constant
int c = 065    // Leading zero specifies octal constant, not decimal

Octal Integer Literals

It consists of any combination of digits taken from the set 0 to 7. However the first digit must be 0, in order to identify the constant as octal number.

Example:

int a = 0374;  //Octal Constant
int b = 097;  // Error: 9 is not an octal digit.


Hexadecimal Integer Literals

A Sequence of digits begin the specification with 0X or 0X, shadowed by a system of digits in the range 0 to 9 and A (a) to F(f).

Example:

int  a = 0x34;
int b = -0XABF;

Unsigned Literals

We use either the u or U suffix for Unsigned Constants  and  use either the l or L suffix. for Long constants

Example :

328u  0x7FFFFFL  0776745ul;

Floating point Literals

Floating-point Literals are also called as real constants. The Floating Point contain decimal points and can contain exponents. They are used to represent values that will have a fractional part and can be represented in two forms – fractional form and exponent form.

In the fractional form, the fractional number contains integer part and fractional part. A dot (.) is used to separate the integer part and fractional part.

Example:

float x = 2.7f;

In the exponential form, the fractional number contains constants a mantissa and exponent. Mantissa contains the value of the number and the exponent contains the magnitude of the number. The exponent, if any present, specifies the magnitude of the number as a power of 10.

Example:

 7.6: 23.46e0 // 23.46 x 100 = 23.46 x 1 = 23.46 23.46e1 // 23.46 x 101= 23.46 x10 = 234.6

Character Literals

Character Literals are specified as single character enclosed in pair of single quotation marks. Single character constants are internally represented as ASCII codes.

String Literals

String Literals are treated as an array of char. By default, the compiler adds a special character called the ‘null character’ (‘\0’) at the end of the string to mark the end of the string.

Example:

String str = “good morning”;

Boolean literals

There are two Boolean literals

  • true represents a true Boolean value
  • false represents a false Boolean value

Besant Technologies – Chennai & Bangalore Branch Locations

Besant Technologies - Velachery Branch
Plot No. 119, No.8, 11th Main road, Vijaya nagar,
Velachery, Chennai - 600 042
Tamil Nadu, India
Landmark - Reliance Digital Opposite Street
+91-996 252 8294 / 996 252 8293

Besant Technologies - Tambaram Branch
No.2A, 1st Floor, Duraisami Reddy Street,
West Tambaram, Chennai - 600 045
Tamil Nadu, India
Landmark - Near By Passport Seva
+91-996 250 4283

Besant Technologies - OMR Branch
No. 5/318, 2nd Floor, Sri Sowdeswari Nagar,
OMR, Okkiyam Thoraipakkam, Chennai - 600 097
Tamil Nadu, India
Landmark - Behind Okkiyampet Bus Stop,
+91-887 038 4333

Besant Technologies - Porur Branch
No. 180/84, 1st Floor, Karnataka Bank Building
Trunk Road, Porur,
Chennai - 600 116
Tamilnadu, India
Land Mark: Opposite to Gopalakrishna Theatre
+91-755 022 6990

Besant Technologies - Anna Nagar Branch
Plot No:1371, 28th street kambar colony,
I Block, Anna Nagar ,
Chennai - 600 040
Tamil Nadu, India
Landmark - Behind Reliance Fresh
+91-938 404 0493

Besant Technologies - T.Nagar Branch
Old No:146/2- New No: 48,
Habibullah Road,T.Nagar,
Chennai - 600 017
Tamil Nadu, India
Landmark - Opposite to SGS Sabha
+91-984 025 8377

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22/67, 1st Floor,
North mada street, Kamaraj Nagar
Thiruvanmiyur, Chennai 600041
Tamil Nadu, India
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+91-938 404 0493

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No. 4/76, Ambedkar Street,
OMR Road, Egatoor, Navallur,
Siruseri, Chennai 600130
Tamil Nadu, India
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+91-7338 810 550

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No.37, Ground Floor,
Thiruvalluvar Salai,
Maraimalai Nagar,Chennai 603209
Tamil Nadu, India
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+91-979 123 7373

Besant Technologies - BTM Layout Branch
No 2, Ground floor,
29th Main Road, Kuvempu Nagar,BTM Layout 2nd Coming from Silkboard, take left at AXA company signal,
Stage, Bangalore - 560 076
Karnataka, India
Landmark - Next to OI Play School
+91-762 494 1772 / 74

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Varthur Main Road, Silver Springs Layout,
Munnekollal, Marathahalli, Bengaluru - 560037
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+91-910 812 6341

Besant Technologies - Rajaji Nagar Branch
No. 309/43, JRS Ecstasy, First Floor,
59th Cross, 3rd Block, Bashyam Circle,
Rajaji Nagar, Bangalore - 560 010
Karnataka, India
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+91- 734 916 0004

Besant Technologies - Jaya Nagar Branch
No. 2nd Floor,1575,11th Main Road,
4th T-Block, Pattabhirama Nagar, Jaya Nagar,
Bangalore-560041
karnataka, India
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+91-733 783 7626

Besant Technologies - Kalyan Nagar Branch
No.513, 4th Cross Rd
2nd Block, HRBR Layout, Kalyan Nagar,
Bangalore-560043
karnataka, India
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+91-938 404 0495

Besant Technologies - Electronic City Branch
No. 7, 3rd Floor, Ganga Enclave,
Neeladri Road, Karuna Nagar, Doddathoguru Village,
Electronics City Phase 1, Electronic City,
Bangalore - 560100, karnataka, India
Land Mark: Adjacent to HDFC Bank and State Bank Of India
+91-782 392 2180

Besant Technologies - Indira Nagar Branch
No.54, 1st Floor,
5th Main kodihalli,
Bengaluru, Karnataka 560008, India
Landmark: Behind Leela Palace Hotel,
+91-910 812 6339

Besant Technologies - HSR Layout Branch
Plot No. 2799 & 2800, 27th Main,
1st Sector, HSR Layout,
Bengaluru, Karnataka 560102, India
+91-733 783 7626