JAVA

1. Java-overview 2. Features of Java 3. History of Java 4. HW SW Req for Java SE 7 5. Java Environment Setup 6. Basic Requirement 7. Comments 8. My First Program in Java 9. Line Break 10. Escape Sequences 11. Literals in Java 12. Identifiers in Java 13. Variables in Java 14. Data-Types in Java 15. Declare Variables 16. Reserved Key Words 17. printf() 18. Chained & Embedded state 19. Prog.to print sum of 2 nos 20. Scanner class 21. Prg.to print sum & average 22. Area & Perimeter of Rectangle 23. Area Circumference of Circle 24. Prg.for Simple Calculator 25. Operatos in Java 26. Ex. Of Operators 27. Swap two numbers 28. Hierarchy of Operators 29. if( ) statement 30. Prg.to check +ve,-ve or zero 31. if..else statement 32. Prg.to check Odd or Even 33. Prg.to print larger of 2 nos 34. Prg.to print largest of 3 nos 35. Prg.to check divisibility 36. Prg.to check print range 37. for. . . loop statement 38. prg.to print series of nos 39. Prg.to check divisibility 40. prg.to print sum of nos 41. Prg.to print Pyramid 42. prg.for Factorial 43. prg.to fill screen 44. prg.for largest/smallest no 45. prg.to print reverse no 46. prg.to add each digit 47. prg.for sum of series 48. prg.for fibonacci series 49. prg.to check Prime nos 50. prg. Prime no from 1 to 100 51. prg.Specified Prime nos 52. while( ) statement 53. do. . While statement 54. break & continue statement 55. switch case statement 56. Array in Java 57. print reverse order using array 58. Ascending/Descending order 59. prg.to search no in Array 60. Multidimensional Array 61. String in Java 62. String with spaces 63. prg.to print string in reverse 64. prg. to count A,E,I,O,U vowel 65. User defined methods 66. Methods program example 67. General Purpose Programs 68. Loan & EMI calculation prg. 69. Table print prg. 70. Leap year program 71. lower to UPPER case prg. 72. Age Distribution prg. 73. Bank note calculation prg. 74. Simple Interest prg. 75. Compound Interest prg. 76. Simple Depreciation prg. 77. Reducing bal.Depreciation prg. 78. Marksheet prg. 79. Income Tax prg. 80. Time calculator prg. 81. Distance converter prg. 82. Volume Air Calculation prg. 83. Time to fill Water Tank prg. 84. Salary Calculation prg. 85. Total Sale Calculation prg. 86. Male/Female percentage prg. 87. Library Rent prg. 88. Office Expance prg. 89. Total Salary Calculation prg. 90. Profit or Loss prg. 91. Total Profit/Loss prg. 92. Palindrome program 93. Java Interview Part1 94. Java Interview Part2 95. Java Interview Part3 96. Java Interview Part4 97. Java Interview Part5 98. Java Interview Part6 99. Java Interview Part7 100. Java Interview Part8 101. Java Interview Part9 102. Java Interview Part10 103. Java Interview Part11
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Data-Types in Java tutorials

  • In Java Data-Types are categories into two types:

    1. Primitive Data Types

    2. Reference/Object Data Types

Primitive Data Types

  • Primitive data types are those data type which are inbuilt or predefined by the language and they are also named by the keywords.

  • Below chart shows the eight primitive data types of Java.

Type

Represents

Range

Default Value

byte

8-bit signed two's

complement integer.

-128(-2^7) to 127(2^7-1)

0

short

16-bit signed two's

complement integer.

-32,768(-2^15) to 32,767(2^15-1)

0

int

32-bit signed two's

complement integer.

-2,147,483,648.(-2^31) to

2,147,483,647(inclusive).(2^31 -1)

0

long

64-bit signed two's

complement integer.

 -9,223,372,036,854,775,808.(-2^63) to

9,223,372,036,854,775,807 (inclusive).(2^63 -1)

0L

float

32-bit IEEE 754 floating point.

1.40129846432481707e-45 to

3.40282346638528860e+38

0.0f

double

64-bit IEEE 754 floating point.

4.94065645841246544e-324d to

1.79769313486231570e+308d

0.0d

boolean

one bit of information.

True or False

false

char

single 16-bit Unicode character.

'\u0000' (or 0) to '\uffff' (or 65,535

inclusive)

'\u0000'

Reference Data Types

  • In Java a reference data type is a variable that can contain the reference or an address of dynamically created object.

  • These type of data type are not predefined like primitive data type.

  • The reference data types are arrays, classes and interfaces that are made and handle according to a programmer in a java program which can hold the three types of values as Array type, class type and Interfaces type.


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