How to use JCABI Immutable to build an unsatisfactory Java class library
How to use JCABI Immutable to build an unsatisfactory Java class library
JCABI IMMUTable is a Java class library that helps you create unchanged classes.The unavailable classes are safe and reliable in a multi -threaded environment because their state cannot be modified.In this article, we will introduce how to use JCABI IMMUTable to build an unsatisfactory Java class library and provide some example code.
1. Add JCABI Immutable dependencies
First, you need to add JCABI Immutable to your project.You can add dependencies through Maven or Gradle.The following is an example of adding Maven dependence:
<dependency>
<groupId>com.jcabi.immutable</groupId>
<artifactId>jcabi-immutable</artifactId>
<version>1.5</version>
</dependency>
2. Create an unavailable class
Next, we will create a simple unsatisfactory class as an example.Using JCABI Immutable only requires only one annotation to mark the category as a variable:
import com.jcabi.immutable.Immutable;
@Immutable
public final class Person {
private final String name;
private final int age;
public Person(String name, int age) {
this.name = name;
this.age = age;
}
public String getName() {
return this.name;
}
public int getAge() {
return this.age;
}
}
In the above example, we use the `@immutable` annotation to mark the` Person` class as the unchanged.All member variables of the class must be the `Private Final` to ensure that their state is immutable.
3. Used uninvited classes
Once we create unavailable categories, we can use it in the program.Here are how to create and use the example code of the `Person` object:
public static void main(String[] args) {
Person person = new Person("Alice", 25);
System.out.println("Name: " + person.getName()); // 输出 "Name: Alice"
System.out.println ("Age:" + Person.getage ()); // Output "Age: 25"
}
In the above example, we created an object named `Alice`, age` 25`, and printed their names and age.
Summarize
Using JCABI IMMUTable can easily create an unable variable Java library.By using the `@immutable` annotation, we can mark a class as a non -variable and ensure that its state will not be modified.Such a class is safe and reliable in a multi -threaded environment.I hope this article will help you understand how to use JCABI IMMUTable to build an unsatisfactory Java class library.
