A multithreaded program contains two or more parts that can run concurrently. Each part of such a program is called a thread, and each thread defines a separate path of execution. Thus, multithreading is a specialized form of multitasking. There are two distinct types of multitasking: process-based and thread-based. A process-based multitasking is the feature […]
Continue ReadingException 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 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 […]
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Continue ReadingExample;-WAP to print a message “Welcome to Java World”.
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class Example { public static void main (String args[]) { System.out.println ("Welcome to Java World"); } } |
Output: Welcome to Java World Explanation of above program public static void main(String args[]) All Java applications begin execution from main ( ) function. (This is just like C/C++.) The public keyword is an access specifier, which allows the programmer to control the visibility of […]
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