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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

How do you use 2-D array with malloc?

You use a 2-D array with malloc the same way you use any other structure or scalar with malloc. The malloc library call takes a single argument of type size_t (in bytes) and returns a void* pointer to a region of memory that is suitably aligned for any supported data type. An example using the 2-D array...

int *myArray[10][20];

myArray = malloc (sizeof (myArray));

if (myArray == NULL) {...exception processing...};

Note that a 2-D array is really the same as a 1-D array - its a linear region of memory - its just that the compiler does address arithmetic for you.

What does implementation mean in java?

Implementation in java mean to accomplish some aim or to execute some order in java software platform. Your class can implement more than one interface, so the implements keyword is followed by a comma with separated list of the interfaces implemented by the class. By convention, the implements clause follows the extends clause, if there is one.

What is meant by development and deployment in java programming language?

These terms are not limited to Java programming.

Development refers to anything having to do with creating a program. Design and implementation fall under this category.

Deployment is delivering the program to other people.

What are the risks of using compiler interpreter assembler?

The error messages may be frustrating as they show that your program is not perfect... Or I do not know what risk you mean...

Why do all java objects have a common ancestor?

Java is an object oriented language, which means that one of its core principles is inheritance. All classes (and hence the objects created from them) are derived from a parent. In this way, classes inherit variables, methods, and classes from their parent so that they do not have to redefine them. In Java's case, the common parent of all classes is Object. This gives every class some basic functionality, such as the equals, toString, and wait methods. Besides uniformity, another advantage of inheritance is clear organization. Imagine if we could not guarantee the comparison of two objects with the equals method. Finally, a global parent class means that every class, no matter how specific, can be generalized into the parent's type (Object o = new String()).

Difference between scjp and scwcd exam?

SCJP stands for Sun Certified Java Professional

SCWCD stands for Sun Certified Web Component Developer

SCJP is a certification for understanding on core java concepts whereas SCWCD is for web developers. SCWCD is usually considered an advanced certification whereas SCJP is the most basic of Java certifications.

Which is the best way to convert numbers in string under java?

All of the Java number classes have a parse[type] method, like parseInt() in Integer or parseDouble() in Double that convert Strings to primitive numbers.

String s = getInput();

int var = Integer.parseInt(s);

How many number of objects we can store in an ArrayList. Is there any limit?

No. there is actually no such limit in any of the collections in java. The arraylist and vector are the most commonly used collections and they take thousands of objects. I have personally used them with atleast a 100,000 thousand objects.

Do i have to keep Java 6 update 3?

When you update to a new version of Java you usually don't need to keep the old version installed. Note that if you do remove the old version and suddenly your program (or a program that you use) no longer works correctly, then you probably need to reinstall the old version.

Importance of computer packages in construction?

A Java package is a mechanism for organizing Java classes into namespaces similar to the modules of Modula. Java packages can be stored in compressed files called JAR files, allowing classes to download faster as a group rather than one at a time. Programmers also typically use packages to organize classes belonging to the same category or providing similar functionality. 1. A package provides a unique namespace for the types it contains. 2. Classes in the same package can access each other's members.

What is the difference between internal and external help desks?

An internal help desk is made up of employees of the product or service in question. An external help desk is usually contracted to perform the same duties.

How make IVR?

The following is found in the link IVR Design Processunder Related Links below: * IVR Consulting - the definition phase of an IVR project. During this period, IVR consultants determine if and how an automated phone answering solution can benefit both the organization and the end user. The result of this phase is the creation of an IVR feasibility document. * IVR Design - is an important phase of a project where the IVR application requirements are researched and defined in terms that can be understood by an IVR developer. The result of this research is a written document called the IVR specification. * IVR Development - is a component of an IVR project where a programming team is assembled and assigned tasks to compete the creation of an automated phone answering program. * IVR Programming - is the actual coding and creation of the IVR phone application. This can be accomplished using traditional programming languages or the IVR can be developed with high level IVR programming tools. * IVR Testing - is a key element within a new IVR development project. Testing involves not just the functioning of the IVR program but also how well the IVR program performs under stress and error conditions. * IVR Implementation - is the final phase of a new IVR project. During this period, the IVR program is installed in a live environment with real end users utilizing the features of this new program. IVR developers closely monitor the performance of the IVR during this initial implementation phase. * IVR Management - is control over the operation of an automated phone answering (IVR) program. This entails managing the computer and telecom resources as well as the IVR program including current maintenance functions and future enhancements.

How many computers have java?

Many, many computers have Java - the majority of computers that access Internet, I daresay. It comes included with several browsers, or else you get a suggestion to install it as soon as you access a Web site that requires Java.

Many, many computers have Java - the majority of computers that access Internet, I daresay. It comes included with several browsers, or else you get a suggestion to install it as soon as you access a Web site that requires Java.

Many, many computers have Java - the majority of computers that access Internet, I daresay. It comes included with several browsers, or else you get a suggestion to install it as soon as you access a Web site that requires Java.

Many, many computers have Java - the majority of computers that access Internet, I daresay. It comes included with several browsers, or else you get a suggestion to install it as soon as you access a Web site that requires Java.

You can use a variable to declare an array's size true or false?

True and false in the same time, because even so you can declare array size using notation for variables you have use constwhich makes your variable basically a constant:

const int
arraySize = 10;

In Java, you can use any expression to define the array size, when you create the array. Once you create an Array object, however, you can't redimension it - but you can create a new Array object and destroy the old one.

Can you store non primitive data type in the array list?

Yes you can store non primitive data type variables in an array.

String is a non primitive data type. You can declare a string array as:

String a[]=new String[10];

What is data interface?

For detail information about computer data interface visit the following link named

"Computer Data Interface"

Is the java is procedural language?

Java is an Object Oriented language not a procedural language

What is the best type of data type for storing shoe size?

Well, recall that shoes can come in half-sizes. That eliminates integers (and similar).

The best data type would be a float.

How do you find the difference between two arrays in Java?

for arrays you can list the different arrays and what attributes that you give to them.

What does complete awareness of an object refer to?

Complete awareness of an object refers to perception.