Immutable

想破坏也破坏不了。

Immutable 可以确保实例状态不发生改变，访问这类实例时不需要执行耗时的互斥处理，可以提升性能。

实际案例

定义

• Person.java

不可变对象类

/**
 * 不可变类
 *
 * @author bbhou
 * @version 1.0.0
 * @since 1.0.0
 */
public final class Person {

    private final String name;

    private final String address;

    public Person(String name, String address) {
        this.name = name;
        this.address = address;
    }

    public String getName() {
        return name;
    }

    public String getAddress() {
        return address;
    }

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", address='" + address + '\'' +
                '}';
    }

}

• PrintPersonThread.java

线程类

public class PrintPersonThread extends Thread {

    private Person person;

    public PrintPersonThread(Person person) {
        this.person = person;
    }

    @Override
    public void run() {
        int limit = 100;
        for(int i = 0; i [immutable](https://github.com/houbb/thread-learn/tree/master/easy-learn/src/main/java/com/github/houbb/thread/learn/easy/learn/immutable)

# 系列导航

> [多线程系列导航](http://blog.csdn.net/ryo1060732496/article/details/79376415)