多线程的一点小问题！！

[zhangye0807]

(1)(2)这两个地方写成 Person p = new Person() ;和Student s = new Person() ;就出Exception in thread "main" java.lang.StackOverflowError，为什么？？

public class Runnable_Test {

public static void main(String[] arg) {

Person p1 = new Person() ;
Student s1 = new Student() ;
Thread thread = new Thread(p1) ;
thread.start() ;
Thread thread1 = new Thread(s1) ;
thread1.start() ;
}
}

class Person implements Runnable {

private String names ;

Person p = null ; //**************************(1)

public void run() {

p = new Person();

for(int i=0; i<100; i++) {

p.setNames("Person" + i) ;
System.out.println("PersonName---->" + p.getNames()) ;
}
}

public void setNames(String names) {

this.names = names ;
}

public String getNames() {

return this.names ;
}
}

class Student extends Person implements Runnable {

private int age ;

Student s = null ; //**************************************(2)

public void run() {

s = new Student() ;

for(int i=0; i<100; i++) {

s.setNames("Student:" + i) ;
s.setAge(i) ;
System.out.println("StudentName~~~~" + s.getNames());
System.out.println("StudentAge*******" + s.getAge());
}
}

public void setAge(int age) {

this.age = age ;
}

public int getAge() {

return this.age ;
}
}

[liwenso]

Person p = new Person(); **A1 //**************************(1)

public void run() {

p = new Person(); **A2


一旦线程run起来之后,A2部分就会运行,A2的运行将导致一个person的实例化,person的实例化要经过A1并且运行它.A1被运行后也会造成一个person实例化的过程,这样就等于一直在实例化,所以stack overflow了.





至少看起来是这样的.

[windforcecn]

你的person本身就是线程类

如果在变量里实例化，就会不断的生成person对象

student也一样

当然会内存溢出