importjava.util.*;publicclassJavaExample{publicstaticvoidmain(Stringargs[]){LinkedHashSet<String>set=newLinkedHashSet<>();set.add("Paul");set.add("Ram");set.add("Aaron");set.add("Leo");set.add("Becky");Iterator<
An interface which is declared inside another interface or class is callednestedinterface. They are also known as inner interface. For example Entry interface in collections framework is declared inside Map interface, that’s why we don’ use it directly, rather we use it like this:Map.Entry. ...
The below diagram gives an idea about Encapsulation in Java Points to be made from the above diagram are Variables (in the example: height, weight, bmi) are declared private, and hence not visible to other classes. For each variable, there is a setter method and getter method, which sets ...
Let’s see an example. Assume we have four students and we asked them to draw a shape. All the four may draw different shapes like Circle, Triangle, and Rectangle, . We will see detailed explanation with some example programs about Polymorphism in the post related toPolymorphism. Abstraction:...
CompletableFuture.anyOf() as the name suggests, returns a new CompletableFuture which is completed when any of the given CompletableFutures complete, with the same result. Consider the following example - CompletableFuture<String> future1 = CompletableFuture.supplyAsync(() -> { try { TimeUnit.SE...
Example: String greeting = "Hello, world!"; // String literal String path = "C:\\Program Files\\Java\\"; // String literal with backslashes String unicodeString = "\u03A9\u03B1\u03B2\u03B3"; // String literal with Unicode characters (Ωαβγ) ...
This is an example of function overloading, an aspect of polymorphism. Note that endl (end line) is the same as the ‘\n’ character in C. Also note that in C++ comments begin with // and continue to the end of the line (for multiline comments, you can still use the C style /...
Running the Example Programs A Note About Security The server and client programs run with a security manager installed. When you run either program, you need to specify a security policy file so that the code is granted the security permissions it needs to run. Here is an example policy fil...
After you build either server-side or client-side classes with thejavaccompiler, if any of those classes will need to be dynamically downloaded by other Java virtual machines, you must ensure that their class files are placed in a network-accessible location. In this example, for Solaris or ...
All the code in this example does is create a thread that prints a string to the standard output stream. The main thread waits for created (child) thread to complete by calling join(). Directly manipulating threads this way is fine for simple examples, but with concurrent programming, such ...