java 9 jlink example

Java BASICS (9)I. threads and processes Process): 1. It is a running activity of a computer program about a dataset. It is the basic unit for the system to allocate and schedule resources and the basis of the operating system structure. 2. In the early process-oriented computer structure, processes are the basic execution entities of programs. 3. In the modern thread-Oriented Computer structure,A process is

Gc log parameter migration in Java 9 and java9gclog migrationCollation This article mainly studies the migration of gc log parameters in Java 9. Unified JVM and GC Logging Java 9 introduces a unified log framework to include gc-re

Whether you're a novice or a senior programmer, it's always a good thing to review the practice of exception handling, because it ensures that you and your team can handle it when you're having problems. Handling Exceptions in Java is not an easy thing to do. Beginners find handling anomalies difficult to understand, and even senior developers spend hours discussing whether throwing exceptions or exceptions should be thrown.That's why most development

.-------------"$" has two main uses for referencing OGNL expressions in an internationalized resource file. Configuring files in Struts 2 and i18nUse of Expressions:------------1. Access to the Base object treeThe object tree is accessed by concatenating the object's references by using a dot number.For example: Xxxx,xxxx.xxxx,xxxx. xxxx. xxxx. xxxx. xxxx2. Access to container variablesAccess to the container variable is performed by the # symbol plus

a connected socket through the established port.2, the server and client interaction processA, the server creates a serversocket and calls the Accept () method to wait for the client.B, the client creates a socket request to connect with the user.C, the server receives the client's request, while establishing a new socket to establish contact with the customer, the server continues to wait for the new request3. Example (upload image):ClientService si

Exception (Exception)First, what is an anomaly?Exceptions are errors in the program, such as array bounds, access to null pointers, and so on. In Java , everything is objects, exceptions are no exception. All exceptions are an instance object derived from the Throwable class. Ii. Classification of anomaliesIn the anomalous world, there are two major schools. One is called the error class, the other faction is called the Exception class, they all inhe

easier to iterate through arrays and collections. from EnglishThe literal meaning of a foreach is the meaning of "for each", so how do you make a foreach statement?Grammar:We use the for and foreach statements to iterate through the array, respectively:Operation Result:six two-dimensional arrays in JavaThe so-called two-dimensional array, which can be simply understood as a "special" one-dimensional array, each of its array space holds a one-dimensional array.So how to use a two-dimensional arr

Title One: Write a function, enter N, and find the nth term of the Fibonacci sequence. The Fibonacci sequence is defined as follows:1, efficiency is inefficient solution, the picky interviewer will not likeMany C language textbooks in the time of the recursive function, the family take Fibonacci as an example, so many candidates for the problem of the recursive solution are very familiar.Here is the implementation codeWe have repeatedly used this prob