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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Features of Java tutorials

Simple

  • Java is Easy to write and more readable and eye catching.

  • Most of the concepts are drew from C++ thus making Java learning simpler.

  • Another aspect of simple is small. One of the goals of JAVA is to enable the construction of software that can run stand-alone in small machines. The size of the basic interpreter and class support is about 30K bytes, adding the basic standard libraries and thread support (essentially a self-contained microkernel) brings it up to about 120K.

Object Oriented

  • Java is a pure Object oriented. everything in java is object. All programs and data reside inside objects and classes

  • A simple definition of object oriented design is that it is a technique that focuses design on the data and objects.

  • Java can be easily extended since it is based on the Object model.

Platform independent

1) In C or C++, you write Source Code.

 

2) You Compile it into Machine code that is specific to Platform i.e. Windows, Mac or Linux.

 

3) Machine code is then compiled to platform specific Executable files for Windows, Mac or Linux.

 

Complied files are designed to work on specific platform, and it would produce different result or output for another platform.

 

So if you want your program to run on several platforms, you have to compile your program several times.

 

 

1) in Java you write source code.

 

2) Source code is then compiled to intermediate language. So you just have a unique byte code file ( a .Class File). The intermediate language is the Byte Code. The Byte code is Universal for all Platforms let it be Windows, Mac or Linux.

 

3) Finally this byte code is distributed over the web and interpreted by platform specific Java Virtual Machine (JVM) on whichever platform it is being run.

 

 

This technique unlike many other programming languages including C and C++ when Java is compiled, it is not compiled into platform specific machine. Java create platform independent byte code..

 

Secure

  • In C / C++ programmer could access almost any resources, either hardware or software on the system. This was very flexible, but could lead to confusion and complexion.

  • Java is intended to be used in networked / distributed System and lots of emphasis has been placed on security.

  • While Java's secure feature it enables to develop virus-free, tamper-free systems.

  • Authentication techniques are based on public-key encryption.

Architectural- neutral

  • Java was designed to support applications for network.

  • Networks are composed of variety of System, CPU, Operating System and Architectures.

  • Java compiler generates an architecture-neutral object file format which makes the compiled code to be executable on many processors, with the presence Java runtime system.

  • Java is intended to let application developers Write Once, Run Any Where (WORA), meaning that code that runs on one platform does not need to be recompiled to run on another.

Portable

  • Java programs can execute in any environment for which there is a Java run-time system.(JVM)

  • Java programs can be run on any platform (Linux, Window, Mac)

  • Java programs can be transferred over World Wide Web (e.g. applets)

Robust

  • The Code of java is Robust and Means of first checks the reliability of the code before Execution When We trying to Convert the Higher data type into the Lower

  • Then it Checks the Demotion of the Code the It Will Warns a User to Not to do this So it is called as Robust

Multi-threaded

  • Writing programs that deal with many thing could be difficult with conventional single-threaded C and C++.

  • With Java's multi-threaded feature, it is possible to write programs that can do many tasks simultaneously.

  • This feature allows developers to create interactive multi-threading applications.

  • In Java it requires declarations and does not support C style implicit declarations.

  • Automatic garbage collections avoid storage allocation bugs.

High Performance

  • The use of bytecode makes the performance high. the speed is also high with comparing c, c++.

  • JVM can execute them much faster.

Dynamic

  • Java is a dynamic language. So it is capable of linking dynamic new classes, methods and objects. Java supports functions written in C and C++ also.These functions are called native methods. During Run-Time Native methods can be linked dynamically

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