Do all elements in a multidimensional array have the same data type?
That really depends on the programming language. In Java, the answer is basically "yes", although if you choose the "Object" data type you could probably accomodate different data types.
If you need collections of different data types - again, assuming Java - it is probably better to use some other structures, for better organization. For example, you can organize different data types into an object. Then you can collect various of those in an array. As an example, you can create an array of objects of a class "Person"; and you this class so that each Person has an age (type int), a name (type String), and any other information you need for your specific application.
What is a characteristic of a contention-based access method?
It scales very well under heavy media use
Why are the indents necessary after the if and else statement?
Indents are not necessary for simple if statements:
if (true) /* do something */ ;
else /* do something */;
However, when a statement is a compound statement, it's best to place the statement body on a separate line and indent it:
if (true) {
/* do something */ ; /* do something */ ; /* do something */ ;
} else {
/* do something */;
/* do something */;
}
The indents help the reader; separating the controlling expressions from the compound statements and thus exposing the structure of the if statement itself.
What is Procedural Abstraction?
java supports procedural abstraction by means of constructors and methods. in java constructor and methods are always components of particular class. java supports coping parameter only.
procedural abstraction is a principle in which the particular language supports some features through which procedures are modelled in the class hiding other details.
How do you delete an array object in java language?
The Java Virtual Machine takes care of all the actual deletion for you. Once an object no longer has any references left, the garbage collector will come along and clear up that memory automatically.
What is acess spacifier in java?
An Access Modifier is a key word in java that determines what level of access or visibility a particular java variable/method or class has. There are 4 basic access modifiers in java. They are:
1. Public
2. Protected
3. Default and
4. Private
Private is the most restrictive access modifier whereas public is the least restrictive. Default is the access protection you get when you do not specifically mention an access modifier to be used for a java object.
What is a type of spam that collects data from a user without his knowledge?
Spyware is a software that collects information from the user without their knowledge. It also called spybot or tracking software if it is obtained from the internet. Many of these software get automatically installed into the computer as a virus software or as a result of downloading materials from untrusted sources. They may also be installed when some of the deceptive add pop-ups on the internet are clicked.
What are the mathematical order of operators in Java programming?
Mathematical operators have the standard precedence: parenthesis (brackets), orders (powers), multiplication/division, addition/subtraction. x + y * z implies x + (y * z) because multiplication has higher precedence than addition. When two operators have the same precedence (such as addition and subtraction), they are evaluated left to right. Thus x - y + z implies (x - y) + z.
How does strong typing help in reducing errors in programs?
You mean static typing, not strong typing. Strong typing simply means hit the keys harder!
Static typing means that the compiler knows the type at compile time and can therefore check to ensure that all operations upon those types conform to the operations expected of those types. Thus we cannot inadvertently make a silly error such as trying to multiply two strings together. Static typing also means that the compiler can optimise code to suit the specific types being operated upon, rather than generalising the code for a generic type.
What is a variable long mean in java?
long a=22342332;// declaring long values
memory size is 8 bytes
range is -9223372036854775808 to +9223372036854775807
Passive Electronically Scanned Array (PESA) and the Active Electronically Scanned Array (AESA) are basically same in technology and principles of operation , both systems are capable of steer its beam Electronically through utilization of Phase Shifter hence it could be made in fully solid state configuration where no moving parts required (like APG-77 Radar on F-22 or Zhuk-AE Radar onboard MiG-35) they're only differs in source of Radio Frequency (RF) source The AESA uses multiple numbers of Radiating Elements where each of them have their own Transmitter and Receiver Module, making the Antenna where those modules located become "active" because it can Radiate by itself While the PESA system uses common RF source that usually found in conventional Radar like Klystrons, Magnetrons and Travelling Wave Tubes (this one especially, most common in Airborne Application like Fighter Radar). In Terms of Advantages the AESA system is typically better than PESA because of following factors : 1.because the Antenna Elements contain its own Transmitter and Receiver modules and located Right behind the Radiator, it would have lower or even No accidental loss , unlike her PESA sister which still require a connection to be made between its RF source to Radiating elements , incidental loss may occur. 2. High fault tolerance, failure of some modules will not hamper the operation of Radar (typical AESA Radar may contain 100++ Elements) however the entire device would fail if the failure occurs in 10% of total module counts.
3.No Single Point Failure , since basically each modules in active Version contains its own transmitter and Receiver modules, the passive device however since it still use single Transmitter device like Traveling Wave tube , failure of the transmitter may hamper the RADAR operations
Answers by :Xenostrike 06 a.k.a Stealthflanker an Illegally Banned member from Electrosphere
EDIT- Bit improvements and adding single point failure in previous answer
Just to help point the above answer at the questions Passive systems have a single point of failure in its transmit devices (Travelling Wave Tubes,Wave Guides, Microstrips and Power Dividers as well as Antenna Feed System) . Active antenna do not have a single point of failure and a meant to degrades performance gracefully except probably malfunctions in its tapering systems or when the beam is steered in very high deflection angle which will reduce antenna effective Area, increase beamwidth hence reducing gain an compromise detection range. Active versions are much more flexible as phase can be varied in each or a groups of Radiating elements to create different waveforms or beamshapes .
The import statement is always the first noncomment statement in a Java program file?
False. If your class belongs to a package, the package statement should be the first statement. Plus, it's possible that you're not using any resources outside the default java.lang package, and would have no need to import any additional packages.
Summarize the major accomplishments achieved during this performance appraisal period?
major accomplishments during performance during apprasial period
What are overriding objectives?
The objective of overriding in Java is to provide features for a class to define its own behavior even for cases where the super class that it extends has already defined one.
There might be cases where we want a specific behavior in our class but if the super class already has a method that does the same thing we wont be able to implement our behavior. Hence this overriding concept is available which lets us write our own implementation which would mask the code in the super class and let us run our logic.
What is the difference between vectors and arrays?
The abstraction are the same. However, the array may be of any objects, while a vector, in narrowed definition, each element is a scalar value (e.g, int, float, double, etc), to fulfill the abs(vector) = aScalarValue property of a vector. An array with the same data type would look exactly the same. But an array of Persons will be difficult to be a vector!
How do you get java on school computer?
You should talk to whoever manages the software on school computers. They should be able to install Java for you, as long as you ask.
What are the good qualification of the genunie person?
A genuine, good person believes that God created him or her, and they believe that God is One and has no partners. So they don't say that anyone is like God in anyway. They admit and acknowledge what they are. We are simply creations in need of our Creator every second. There are two kinds of people: Good guys and Bad guys. The genuine person asks God to make him or her one of the good guys. And the good guys do fight the bad guys, but some times in very subtle positively clever ways. aicp
What is an element in the Array?
An array is a container object that holds a fixed number of values of a single type. ... Each item in an array is called an element, and each element is accessed by its numerical index. As shown in the preceding illustration, numbering begins with 0. The 9th element, for example, would therefore be accessed at index 8.
The sum of the two numbersis 105.7 the difference of the two number is19
it is a unused for years slang for a coffee party ja being slang for java
"Head" is a term given to the weight and resulting pressure of a column of liquid above a given point in the system. Static head means that the head pressure is measured with no liquid actually flowing. Dynamic head would be the pressure of the liquid while it is actually flowing.
How is an applet started by a browser?
Once you have made the applet, you need to make an HTML file to launch the applet. Search google for examples, it's only about 3 lines of code
Java variable types and controls?
Java is a powerful language that gives us options to have data in different forms. We have several data types that we can use for our needs. The basic data types that java offers us are termed as Primitive Data Types. Though all programming languages have varied data types java offers us with a variety of data types that are much powerful and simplified to use when compared to other languages.
The Java programming language is strongly-typed, which means that all variables must first be declared before they can be used. This involves stating the variable's type and name.
int age = 10;
The above statement tells the java compiler that a field named "age" which holds numeric data and having an initial value of 10 is declared. A variable's data type determines the values it may contain, plus the operations that may be performed on it. In addition to int, the Java programming language supports seven other primitive data types. A primitive type is predefined by the language and is named by a reserved keyword. Primitive values do not share state with other primitive values. The eight primitive data types supported by the Java programming language are:
byte, short, int, long, float, double, char and boolean