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Java Programming
The Java programming language was released in 1995 as a core component of the Java platform of Sun Microsystems. It is a general-purpose, class-based, object-oriented language that is widely used in application software and web applications.
5,203 Questions
Why did stanislavski create the method?
He didn't create the method he created the 'system'. The method was an American variation which took the thought of physiology in acting to a whole other step. They did this because American's have to have their way in absolutely everything.
He created the 'system' because he started noticing his actors physical and emotional traits didn't look natural when pieced together, so he tried out a technique of learning the play script emotionally and physically simultaneous so that the actors could do their part more natural. From this he started developing the system.
What are the main features of arrays. How are arrays used and created?
In programming languages, an array is a way of storing several items (such as integers). These items must have the same type (only integers, only strings, ...) because an array can't store different items. Every item in an array has a number so the programmer can get the item by using that number. This number is called the index. In some programming languages, the first item has index 0, the second item has index 1 and so on. But in some languages, the first item has index 1 (and then 2, 3, ...).
What is the meaning of printstacktrace in java?
he message and the stacktrace are two distinct pieces of information. While the stackstrace is mandatory, the message isnt. Most exceptions deliver a message, and it is the best practice, but some just don't and there's nothing to be done to fix it.
public
void
process
()
{
try
{
System
.
out
.
println
(
"test"
);
}
catch
(
Exception
e
)
{
e
.
printStackTrace
();
}
}
It is the order that an event may happen if it is planned;
the way something is meant to be made or to happen.
The only time you should calculate it instead of storing is when you only use that attribute once. Otherwise, store it to avoid repeating calculations.
That is false; the very definition of object-oriented programming is to create objects that model real objects, which places an emphasis on data encapsulation, polymorphic objects, and so on to reduce code complexity, common programming errors, and other problems associated with a non-object-oriented language. The procedures are not nearly as important as the objects that are designed.
How do you convert a java.util.Date to java.lang.String in java?
When you create a SimpleDateFormat object, you specify a pattern String. The contents of the pattern String determine the format of the date and time. For a full description of the pattern's syntax, see the tables in Date Format Pattern Syntax.
The following code formats a date and time according to the pattern String passed to the SimpleDateFormat constructor. The String returned by the format method contains the formatted date and time that are to be displayed. Date today;
String output;
SimpleDateFormat formatter;
formatter = new SimpleDateFormat(pattern, currentLocale);
today = new Date();
output = formatter.format(today);
System.out.println(pattern + " " + output);
The following table shows the output generated by the previous code example when the U.S. Locale is specified:
Customized Date and Time FormatsPatternOutputdd.MM.yy30.06.09yyyy.MM.dd G 'at' hh:mm:ss z2009.06.30 AD at 08:29:36 PDTEEE, MMM d, ''yyTue, Jun 30, '09h:mm a8:29 PMH:mm8:29H:mm:ss:SSS8:28:36:249K:mm a,z8:29 AM,PDTyyyy.MMMMM.dd GGG hh:mm aaa2009.June.30 AD 08:29 AMsource:http://java.sun.com/docs/books/tutorial/i18n/format/simpleDateFormat.html
What ananomus classes in java?
An Anonymous class in Java is one that does not have a name. It is usually created inside a class
Which members of the circle class are encapsulated?
The attributes that are common to all circles are a centre point and a radius. However, a circle is a shape thus it should also encapsulate attributes or interfaces that are common to all shapes, such as width(), height(), draw(), move(), fill(), outline() and so on. Thus it makes sense for your circle class to inherit from a common generic base class such as shape, where shape provides a common, pure-virtual interface and encapsulates attributes that are common to all shapes, such as line-width, line-colour and fill-colour.
Ultimately there is no single object model for a circle -- the implementation and encapsulation are entirely dependant upon your needs and the level of functionality you require. If your requirements are different for every application then you might want to separate all the interfaces over several classes and only include what you actually need using multiple inheritance. Thus you can have simple circles which use the minimum memory, as well as more specialised circles which contain more specific functionality.
What is type casting and what is the danger of casting from one type to another?
Type casting means that you explicitly convert from one type to another. Consider this example:
int x;
long y = 10;
x = y;
The compiler will protest, because of a possible overflow. Now, if you are confident - from a knowledge of the computer program you wrote - that there will be no overflow, you can explicitly:
x = (int) y;
You are telling the compiler that you know what you are doing. The danger, of course, is that you may be wrong, and there may still be an overflow.
The situation is similar if you convert from double to float, or from double or float, to integer. In all of these cases, there is a loss of precision.
Will The Tomcat Web server will work on a stand-alone computer system?
Yes. The Tomcat Web server will work on a stand-alone computer system. It will need The Java environment installed on the same machine.
How do you find the size of a class object?
Java does not have a sizeOf() operator and hence there is no way we can actually determine the size of a java class object. However we can analyze the overall heap space utilization to try to get an approximate indication of how much memory is used by an object but it is not accurate.
What are the different phases of java?
Based on the lecture i have , there are three JAVA PHASES
-- editor. First step in creating java program is by writing ur programms in a text editor. Ex, notepad, emacs etc
-- java compiler. compile. The program by. Using the java compiler. The output of this process is a file of java bytecodes wid the file extension.class
-- java interpreter. The .class file is then interpreted by java interpreter that converts the bytecodes into the machine language of the particular computer your using
---abioo4---
How do you call variable value declare in one class call to another class?
From the face value of the question, they are called message chain, or train rack (if one of them is null!?)
Do static methods operate on objects why?
No. Why? By definition. A static method is, precisely, a method that is not meant to operate on an object. It can only work with static fields, and other static methods, of its class.
