JShell is a java shell tool introduced in Java 9 that allows us to execute Java code and prints the result immediately. It is a REPL (Read-Evaluate-Print-Loop) tool that runs from the command-line prompt. A number is said to be the Fibonacci series if each subsequent number is the sum of the ... Read More

A String is an immutable class in Java and there are two new methods added to the String class in Java 9. Those methods are chars() and codePoints(). Both of these two methods return the IntStream object.1) chars():The chars() method of String class can return a stream of int zero-extending ... Read More

ProcessHandle interface allows us to perform some actions, and check the state of a process. It provides the process’s native pid, start time, CPU time, user, parent process, and descendants. We can get access to a parent process by calling the parent() method, and the return value is Optional. It is empty if the child ... Read More

JShell is a Java's first REPL and command-line tool that provides interactive use of Java programming language elements. We can test the functionality in isolation of a class by using this tool. JShell creates a simple and easy programming environment in the command-line that takes input from the user, reads it, and prints ... Read More

Variable Handle is a variable or reference to a set of variables, including other components of a static field, non-static fields, and outer array elements in the heap data structure. It means that Variable Handle is similar to the existing Method Handle. It can be represented by using java.lang.invoke.VarHandle class. We can use ... Read More

JShell is a new command-line interactive REPL (Read-Evaluate-Print-Loop) tool introduced in Java 9 to evaluate declarations, statements, and expressions written in Java. This tool also allows us to execute Java code snippets and get immediate results.Some times, we have the code already written in java file and able to execute it ... Read More

ProcessHandle interface introduced in Java 9. It allows us to perform actions and check the state of a process that relates. This interface provides the process’s native process ID (pid), start time, accumulated CPU time, arguments, command, user, parent process, and descendants.ProcessHandle interface allows us to perform the following actions.It returns a ... Read More

Http/2 Client API introduced in Java 9. It has more performance improvements over Http/1.1 and also supports server-side push events. This makes the website efficient and faster to browse. Http/2 Client is an incubator module named jdk.incubator.httpclient, which means that all features are still not finalized, and new changes may come in future versions of java. It ... Read More

JShell is a REPL tool that allows snippets of code to be run without placing them in classes. This tool provides a way to evaluate declarations, statements, and expressions in Java and no need to create the main() method to test some parts of the code.The command "/debug" can be used to display ... Read More

JShell is Java’s first official REPL application introduced in Java 9. It is a tool that helps in executing and evaluating simple java programs, and small logics such as statements,  simple programs, loops, expressions, etc. Java REPL can provide a simple programming environment in a command-line prompt. It reads the ... Read More