public class TestBank
{
public static void main(String[] args)
{
Cus c = new Cus();
new Thread(c).start();
new Thread(c).start();
}
}
sum加到了600说明sum是共享数据了 ，但是为什么for循环是两个线程不共享的啊
class Bank
{
private int sum;
public void add(int n)
{
sum = sum + n;
System.out.println("sum = "+sum);
}
}


class Cus implements Runnable
{
private Bank b = new Bank();
public void run()
{
for(int i = 0;i<3;i++)
b.add(100);
}
}

public class TestBank
{
public static void main(String[] args)
{
Cus c = new Cus();
new Thread(c).start();
new Thread(c).start();
}
}
sum加到了600说明sum是共享数据了 ，但是为什么for循环是两个线程不共享的啊
class Bank
{
private int sum;
public void add(int n)
{
sum = sum + n;
System.out.println("sum = "+sum);
}
}


class Cus implements Runnable
{
private Bank b = new Bank();
public void run()
{
for(int i = 0;i<3;i++)
b.add(100);
}
}