OOP in JAVA

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epic

package studentclass;

class student{
private String name;
private String address;
public static void show(){ //using staic keyword...! if not using it have to create class object
System.out.println("student name");
System.out.println("student address");
//name="hanan"; //these are hide coz they are nonstatic veriables
//address="tts";
//System.out.println(name);
//System.out.println(address);

}
}
/**
*
* Abdul
*/
public class Studentclass {

/**
* args the command line arguments
*/
public static void main(String[] args) {
//student st1=new student();
//st1.show();
student.show();

}
}

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what is OS??
The operating system is the most important program that runs on a computer. Every general-purpose computer must have an operating system to run other programs. Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers.
For large systems, the operating system has even greater responsibilities and powers. It is like a traffic cop -- it makes sure that different programs and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system.

what is CA (computer Architecture)?
In computer engineering,[1] computer architecture is a set of disciplines that describes the functionality, the organization and the implementation of computer systems; that is, it defines the capabilities of a computer and its programming model in an abstract way, and how the internal organization of the system is designed and implemented to meet the specified capabilities.[2][3] Computer architecture involves many aspects, including instruction set architecture design, microarchitecture design, logic design, and implementation.[4] Some fashionable (2011) computer architectures include cluster computing and non-uniform memory access.

Computer architects use computers to design new computers. Emulation software can run programs written in a proposed instruction set. While the design is very easy to change at this stage, compiler designers often collaborate with the architects, suggesting improvements in the instruction set. Modern emulators may measure time in clock cycles: estimate energy consumption in joules, and give realistic estimates of code size in bytes. These affect the convenience of the user, the power consumption and the size and expense of the computer's largest physical part: its memory. That is, they help to estimate the value of a computer design.

what is CG (Computer Graphics) ?
graphics
ˈɡrafɪks/
noun
plural noun: computer graphics
1.
the products of the graphic arts, especially commercial design or illustration.
2.
the use of diagrams in calculation and design.

all codes related to sorts (bubble,insertion,selection) will be available soon with examples and deep explanations
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Bubble Sort Algorithm C++

Bubble Sort Algorithm in C++
Bubble Sort Algorithm in C++
Bubble Sort Algorithm works by repeatedly stepping through the list to be sorted, comparing each pair of adjacent items and swapping them if they are in the wrong order. The pass through the list is repeated until no swaps are needed, which indicates that the list is sorted. Bubble sort has worst case and average complexity both O(n2) where n is the number of items being sorted. If n is large then bubble sort is not efficient for sorting large lists.