To learn Java or any other programming language, the only best way is to practice and practice more. The more you do the coding, the better you get as time passes. These listed Java examples cover some very basic Java fundamentals and present you few alternative solutions to any single ...
Generics was added in Java 5 to providecompile-time type checkingand removing risk ofClassCastExceptionthat was common while working with collection classes. The whole collection framework was re-written to use generics for type-safety. Let’s see how generics help us using collection classes safel...
4.Write a Java program to create a class called Employee with private instance variables employee_id, employee_name, and employee_salary. Provide public getter and setter methods to access and modify the id and name variables, but provide a getter method for the salary variable that returns a ...
Catch Late– Since java enforces to either handle the checked exception or to declare it in method signature, sometimes developers tend to catch the exception and log the error. But this practice is harmful because the caller program doesn’t get any notification for the exception. We shou...
Last update on May 16 2025 13:07:34 (UTC/GMT +8 hours) This resource offers a total of 50 Java Inheritance problems for practice. It includes 10 main exercises, each accompanied by solutions, detailed explanations, and four related problems. ...
For example, ArithmeticException, NullPointerException, ArrayIndexOutOfBoundsException etc. The examples that we seen above were unchecked exceptions. Note:Compiler doesn’t enforce you to catch such exceptions or ask you to declare it in the method using throws keyword. ...
Examples of using Java 8 features To illustrate how these Java 8 features work in practice, let's dive into some real-world Java 8 code examples. We'll explore scenarios where lambda expressions, method references, streams, and the Date and Time API can be applied to solve common programming...
The domain part of an Object Name should start with a Java package name. This prevents collisions between MBeans coming from different subsystems. There might be additional text after the package name. Examples: com.sun.someapp:type=Whatsit,name=5 com.sun.appserv.Domain1:type=Whatever ...
len is the number of bytes in buf allotted for the digest, the method returns the number of bytes actually stored in buf. If there is not enough room in the buffer, the method will throw an exception.Please see the Computing a MessageDigest example in the Code Examples section for more ...
The errors are serious runtime environment problems that are almost certainly not recoverable. Some examples areOutOfMemoryError,LinkageError, andStackOverflowError. They generally crash your program or part of the program. Only a good logging practice will help you determine the exact causes of error...