Java Programming

A compound statement is a group of statements enclosed in braces, i.e curly brackets. A compound statement is a group of statements enclosed in braces, i.e curly brackets.

A set which containing $and pi are the end blocks are the finite and without these are infinite

in .exe file it contains

machine understandable code. but in .class file it contain only byte code which is not understadable by the microprocessor it will understud by the jvm only . we con't execute .class file without jvm . but we can execute .exe file without c-compiler .

It depends on the size of the object and the amount of (virtual) memory available. However, the size of an object is not determined by the amount of memory it physically occupies, but by the amount of memory it consumes. For example, a resource handle object occupies at least one word of memory, but the resource it refers to consumes additional memory. The sizeof operator only returns the size of memory occupied by the object itself, not the total memory consumed by the object.

The place in which you place JavaScript codes for a website depends entirely on what the code is doing.

If you're going to place the code directly in the website, it is generally advisable to use <SCRIPT> tags to surround the code, and place that code into the HEAD section of the document.

In the old days, we also used the HEAD section for includes ( <script src="blahblahblah.js"...> ) and this is still done if you want to be sure that the script is loaded before the page starts.

However, if the script loading a little later, it's good Search Engine Optimization practice to instead include the script tags at the bottom of the BODY section, just prior to closing.

/**

* Prints a pyramid of asterisks of the specified height.

*

* Will print in the form: printStars(3) =

*

***

*****

*/

public static final void printStars(final int height) {

// perform calculations once

final int totalLength = (height * 2) - 1;

final int totalLength_2 = totalLength / 2;

StringBuilder str = new StringBuilder(totalLength);

// fill with spaces

for (int i = 0; i < totalLength; ++i) {

str.append(' ');

}

// fill in levels

for (int i = 0; i <= totalLength_2; ++i) {

str.setCharAt(totalLength_2 + i, '*');

str.setCharAt(totalLength_2 - i, '*');

System.out.println(str);

}

}

/**

* Prints a pyramid of asterisks of the specified height.

*

* Will print in the form: printStars(3) =

*

* *

* *

*/

public static final void printStars(final int height) {

// perform calculations once

final int totalLength = (height * 2) - 1;

final int totalLength_2 = totalLength / 2;

StringBuilder str = new StringBuilder(totalLength);

// fill with spaces

for (int i = 0; i < totalLength; ++i) {

str.append(' ');

}

// fill in levels

for (int i = 0; i <= totalLength_2; ++i) {

if ((totalLength_2 + i - 1) >= 0) {

str.setCharAt(totalLength_2 + i - 1, ' ');

}

if ((totalLength_2 - i + 1) < totalLength) {

str.setCharAt(totalLength_2 - i + 1, ' ');

}

str.setCharAt(totalLength_2 + i, '*');

str.setCharAt(totalLength_2 - i, '*');

System.out.println(str);

}

} OR second method and easier package javaapplication12; /**

*

* @author Dexy86

*/

public class Main {

public static void main(String[] args) {

for(int i=0; i<5; i++){

for(int v=0;v<i; v++){

System.out.print("*");

}

System.out.println();

}

}

}

A graphical interface usually known as a GUI (Graphic User Interface) is things such as menus and icons in an operating system. It represents the UI (User Interface) the things you interact with in a graphic form.

Hope I could help ;)

java.awt is a standard package of Java. It is a GUI(Graphical User Interface) package, which has classes in it such as Frame, Panel, and Button. Most of the package was later replaced with the javax.swing package, which has most of the same classes, only with a J prepended to them (JFrame, JPanel, JButton). However the java.awt package still includes some event handlers that are considered standard in java (java.awt.event).

The language was originally called 'Green' but was renamed after Java coffee due to the large amounts of it consumed by the developers.

Multi-dimensional arrays are accessed using more than one index: one for each dimension. Multidimensional indexing can be reduced internally to linear indexing; for example, a two-dimensional array with 6 rows and 5 columns is typically represented by a one-dimensional array of 30 elements.

There is no such thing. When declaring a friend function only the explicitly-scoped friend is granted private access. The friend function may well be declared virtual within its own class but none of its overrides are granted access unless they are explicitly granted access.

hello friend, scjp is the internationaly rcognized certification program conducted world wide 24*7 and whole year.as there is no time limit for this xam but if u r familiar with java then i would take approx 1 month to pass with a good score but if u r new to java then in that case it can take even 2 and half month.these are ideal facts but generally it depends on the time that u r giving to ur studies.exam code for scjp 1.4 is 310-035.best books are keithy sierra AND KHALID MOUGHAL.best of luck for the exam.you can cotact me at nrapendralsharma@gmail.com.

I have prepared only 7 days and got 93 percentile .. I have purchased preparation kit from http://www.techfaq360.com/mocktest.jsp

This kit is too good ... you can attend mock exams and easily pass

class sum

{

void main ()

{

int sum = 0;

int n = 1;

while ( n <= 100 )

{

sum = sum + n;

n++ ;

}

System.out.println("Sum is = " + sum );

}}

An array is a list of several related elements. You use the subscript to specify which element you want to access. For example, in Java you might have an array called myArray, with 10 elements (numbered from 0 to 9); myArray[3] would access the fourth element in the array. A variable may be used instead of a constant.

Its used in collector amplitude modulation,Radio frequency recievers ..etc

Abstract classes are a conceptual means of classifying objects. For instance, humans, gorillas, zebras, cats and dogs are all different types of animal but the one thing they all have in common is that they all have mammaries. Thus they are all classified as being mammals in the animal kingdom. The terms "animal" and "mammal" are entirely conceptual, thus they are abstractions. By the same token, circles, squares and triangles are all types of shape, where "shape" is the abstraction.

In computer programming, we use abstract classes to classify objects. Thus if our program utilised collections of shapes, we'd define an abstract class named shape and derive our specific types of shape from that class.

An abstract class is also known as an abstract data type or ADT. Ideally, an ADT has no data associated with it. The main function of an ADT is to provide a common interface to all its derivatives, typically though a pure-virtual interface. A pure-virtual method is a method that is common to all derivatives but one that must be implemented by those derivatives. For instance, if we wish to rotate all of our shapes, we can declare a pure-virtual rotate() method in the ADT shape class. Each derived class must then implement that method otherwise it, too, becomes an ADT.

In order for an instance of an ADT to exist, a derived class must implement all the pure-virtual methods inherited from its ADT. In so doing, we are assured that if an ADT exists, we can invoke any of its pure-virtual methods even if we do not know the specific type of the ADT. The specifics are handled by the derivative itself. Thus if we invoke the shape::rotate() method upon a square, the square::rotate() method will be invoked automatically. Thus we get the correct behaviour, automatically, without having to perform a runtime check to determine what type of shape is actually being rotated.

Generally, they are used to give additional information about the behaviour of a class.It is just used to "mark" Java classes which support a certain capability . Examples: java.util.RandomAccess

java.io.Serializable

java.rmi.Remote

java.util.EventListner

javax.servlet.SingleThreadModel

java.lang.Clonable

javax.ejb.EnterpriseBean

First, it's an error; it should be import java.util.*;

That will make all classes in the java.util package availabe for use in your Java class definition. Java is divided up into packages. Each package can hold classes and other packages. java.util is a package.

HI... When you access a file from within C or C++ you have a choice between treating the file as a binary file or as a text file. C uses the fopen(file,mode) statement to open a file and the mode identifies whether you are opening the file to read, write, or append and also whether the file is to be opened in binary or text mode. C++ opens a file by linking it to a stream so you don't specify whether the file is to be opened in binary or text mode on the open statement. Instead the method that you use to read and/or write to the file determines which mode you are using. If you use the <<operator to read from the file and the >> operator to write to the file then the file will be accessed in text mode. If instead you use the put() and get() or read()and write() functions then the file will be accessed in binary mode. So what exactly is the difference between text and binary modes? Well the difference is that text files contain lines (or records) of text and each of these has an end-of-line marker automatically appended to the end of it whenever you indicate that you have reached the end of a line. There is an end of line at the end of the text written with the C fwrite() function or in C++ when you <. Binary files are not broken up into separate lines or records so the end-of line marker is not written when writing to a binary file. Reading from a text file or binary file is different too as a text file is automatically broken up into separate records as it read in based on the location of the end-of-line markers. So what is this end-of-line marker? Well that depends on the operating system that you are using. The Apple Macintosh computers use a single carriage return as the end-of-line marker (x'0D') while Unix based operating systems including Linux use a single line-feed character (x'0A'). Most PC based systems including DOS, all versions of windows, and OS/2 use a carriage return/line feed combination (x'0D0A') as the end-of-line marker. C and C++ terminate strings with a low value character (x'00'). So what happens when we read from a text file is that the end-of-line character for the operating system that we are using gets converted into a low value end-of-string indicator and when we write to a file the appropriate end-of-line character(s) get written when we indicate the end of the line. This makes the reading and writing of text files much easier because the appropriate end-of-line markers are handled for us. With a binary file none of these conversions take place. When we read a binary file the end-of-line characters for our operating system will be read into the string and treated no different than any other character. When we write to a binary file the only end-of-line markers that are written will be those that we code into the output ourselves and hence will be exactly as we code it regardless of the operating system that we are running on. This makes it much easier for us when the file does not contain straight text and the end-of-line marker does not separate lines of text but rather appears as part of the non-text data content of the file. A binary file can contain text but the text that it contains is not considered to be broken up into a number of lines by the occurrence of end-of-line markers. A binary file may alternatively contain information that contains no text whatsoever. It is up to the program reading the file to make sense of the data contained in a binary file and convert it into something meaningful (eg. an image or a series of fixed length records). Regards Neelagiri

The name of few DBMS are FOXPRO, MS-ACCESS, SQL Server, My SQL, ORACLE, etc.