Detailed explanation of the technical principle of 'iron can adjust behavior' in the Java class library
Adjustable Behavior Pattern is a common framework technology that is widely used in the Java library.This article will introduce the principle of iron -adjustable behavior and how to use this framework technology in Java.
1. The principle of iron can adjust the behavior framework
Iron can adjust the behavior framework by pulling the behavior from the class, so that these behaviors have the ability to switch flexible switching.This means that different behaviors can be selected dynamically at runtime to achieve better code reuse and scalability.
In iron adjustment behavior, behavior is defined as interface or abstract class.Different behavioral implementation classes are implemented or inherited from this interface or abstract class.By injecting behavior into a class, the class can switch the realization of behavior at any time.This method of injection through attributes is also called dependency inject.
In Java, the behavior interface can be defined through the interface or abstract class, and different behavior implementation classes can be created.The reference to the behavior interface in the class provides a method of switching external behavior.Through this method, the realization of behavior can be changed during runtime, so as to achieve different functions.
2. Examples of iron can adjust the behavior framework
The following is a simple example to show the use of iron adjustment of the behavior framework.
1. Define behavior interface:
public interface Behavior {
void perform();
}
2. Realize different behaviors:
public class FirstBehavior implements Behavior {
@Override
public void perform() {
System.out.println("This is the first behavior.");
}
}
public class SecondBehavior implements Behavior {
@Override
public void perform() {
System.out.println("This is the second behavior.");
}
}
3. Use adjustable behavior in the class:
public class MyClass {
private Behavior behavior;
public void setBehavior(Behavior behavior) {
this.behavior = behavior;
}
public void doSomething() {
// Call the behavior interface method to perform specific behavior
behavior.perform();
}
}
4. Use examples:
public class Main {
public static void main(String[] args) {
MyClass myClass = new MyClass();
myclass.setbehavior (new firstbehavior ()); // switch to the first behavior
myClass.doSomething(); // 输出：This is the first behavior.
myclass.setBehavior (New SecondBehavior ()); // Switch to the second behavior
myClass.doSomething(); // 输出：This is the second behavior.
}
}
Through the above examples, we can see that the iron adjustment behavior framework can be dynamically switched to different behaviors during runtime.This design pattern can improve the replication and scalability of the code, decompose behavior and class, so that the code is more flexible and maintained.
Summarize:
Iron adjustment behavior framework is a very useful design pattern that allows dynamically switching different behaviors during runtime.By defining behavioral interfaces, creating different behavior implementation classes, and injecting behavior into classes, realizing the adjustability of behavior.In Java, flexible, repeated and scalable code can be achieved in this way.
