Exception Handling Error occurred in a program can be of two types: syntax error or logical error. An exception is an abnormal condition that arises in a code sequence at run time. In other words, an exception is a run-time error. A Java exception is an object that describes an exceptional (that is, […]
Continue ReadingPackage and Interface Packages are containers for classes that are used to keep the class name space compartmentalized. For example, a package allows us to create a class named List, which you can store in your own package without concern that it will collide with some other class named List stored elsewhere. Packages are stored in a […]
Continue ReadingInheritance It is the process by which object of one class can acquire the properties of object of another class. The class, from which properties are inherited, is known as super class. The class, to which properties are inherited, is known as sub class. A sub class inherits all of the variables and methods defined by the […]
Continue ReadingClass and object A class is a user defined data type which binds data and function into a single unit and objects are the instance of a class. A class is declared by use of the class keyword. The general form of a class definition is shown here:
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class classname { type instance-variable1; type instance-variable2; type instance-variablen; type methodname1(parameter-list) { // body of method } type methodname2(parameter-list) { // body of methodTHE JAVA LANGUAGE } type methodnamen(parameter-list) { // body of method } } |
The data, or variables, defined within a […]
Continue ReadingJava’s Control Statements A programming language uses control statements to cause the flow of execution to advance and branch based on changes to the state of a program. Java’s program control statements can be put into the following categories: selection, iteration, and jump. Selection statements allows program to choose different paths of execution based upon the outcome of […]
Continue Reading2-Tier Architecture & 3- Tier All J2EE applications are broadly divided into two types. These are 2 tier or 3 tier architecture. Basically at high level we can say that 2-tier architecture is Client server application and 3-tier architecture is Web based application. Two-Tier Architecture: The two-tier is based on Client Server architecture. The two-tier […]
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Continue Readingcontrolling Controlling is the basic managerial function. It is the process of ensuring the actual activities confined to planned activity. It is an essential function for all levels of management. It ensures the right things are done in the right manner at right time. Each and every organization set the goals. All activities are directed […]
Continue ReadingMeaning of leadership Leadership is defined as personal quality of an individual that influence the behavior of followers. It is an important function of management. Leadership is an act of influencing people so that the followers follow the path of leader. The successful leader must lead to stimulate and inspire the followers to achieve organizational […]
Continue ReadingConcept and meaning of organization Organization is defined as the determination of relationship between materials as well as human resources. It is most important and basic function of management. It includes division of work, coordination of people and appropriate establishment of materials and resources. Therefore we can say that organization is necessary function of […]
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