The Java Tutorials have been written for JDK 8. Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available.
See Dev.java for updated tutorials taking advantage of the latest releases.
See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases.
See JDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases.
深刻认识和切实推动高质量发展
JavaBeans™ makes it easy to reuse software components. Developers can use software components written by others without having to understand their inner workings.
To understand why software components are useful, think of a worker assembling a car. Instead of building a radio from scratch, for example, she simply obtains a radio and hooks it up with the rest of the car.
This trail describes JavaBeans using the following lessons:
Quick Start provides a speedy introduction to JavaBeans by showing how to build applications with NetBeans.
Writing JavaBeans Components describes the coding patterns used for bean properties, methods, and events. It also outlines the use of a BeanInfo to customize the development experience in a builder tool.
Advanced JavaBeans Topics covers bean persistence, long term persistence, and customization.