Decrypt the internal structure of the core framework in the Java class library
Decrypt the internal structure of the core framework in the Java class library
introduction:
JSWEET CORE is a tool for converting Java code into JavaScript code.Its goal is to simplify the process of using Java language in front -end development.This article will explore the internal structure of the core framework in JSWEET CORE and provide some Java code examples.
1. JSWEET CORE Introduction
JSWEET CORE is an open source Java library that provides the function of converting Java code into JavaScript code.It allows developers to use the powerful features of the JavaScript language in front -end development while using the Java language.
2. The internal structure of jsweet core
The internal structure of JSWEET CORE is composed of the following key parts:
2.1 type analysis
JSWEET CORE analyzes the type statement in the Java code by static, analyzes the relationship between the Java class and the interface and their correspondence in JavaScript.It uses the underlying API of the Java compiler to obtain type information and map it to the equivalent code in JavaScript.
The following is a sample code segment that demonstrates the type analysis in JSWEET CORE:
public class Person {
String name;
int age;
public Person(String name, int age) {
this.name = name;
this.age = age;
}
public void sayHello() {
System.out.println("Hello, my name is " + name + " and I am " + age + " years old.");
}
}
2.2 grammar conversion
JSWEET CORE uses a series of rules to convert Java code syntax into JavaScript code.It processes Java's unique syntax structure and converts it into a coding in the middle effect in JavaScript.For example, it converts the packaging class in Java into the original data type in JavaScript.
The following is a sample code segment that demonstrates the grammar conversion in JSWEET CORE:
public class TypeConversionExample {
public static void main(String[] args) {
Integer num = 10; // Packaging classes
int value = num; // automatic boxing
System.out.println (value); // Output 10
}
}
2.3 Class library support
JSWEET CORE contains support for common classes and methods in the Java class library.It provides equivalent implementation in the Java class library, enabling developers to use these classes and methods in front -end development without additional configuration.
The following is a sample code segment that demonstrates the library support in JSWEET CORE:
import java.util.ArrayList;
import java.util.List;
public class LibraryExample {
public static void main(String[] args) {
List <string> list = New ArrayList <> (); // Use the list interface in the Java class library and the ArrayList class
list.add("Apple");
list.add("Orange");
list.add("Banana");
System.out.println (list); // Output [Apple, Orange, Banana]
}
}
3. Conclusion
JSWEET CORE provides developers with the function of converting Java code into JavaScript code.By understanding the internal structure of JSweet Core, we can better understand its working principles and make full use of the advantages of the Java language in front -end development.
It is hoped that the knowledge provided in this article can help readers a clear understanding of the internal structure of JSWEET CORE and provide some practical skills for them to use Java language in the front -end development.
