Java中的线程干扰错误
让我们看一个例子来理解线程干扰错误的概念-
示例
import java.io.*;
class Demo_instance{
static int val_1 = 6;
void increment_val(){
for(int j=1;j<11;j++){
val_1 = val_1 + 1;
System.out.println("The value of i after incrementing it is "+val_1);
}
}
void decrement_val(){
for(int j=1;j<11;j++){
val_1 = val_1 - 1;
System.out.println("The value of i after decrementing it is "+val_1);
}
}
}
public class Demo{
public static void main(String[] args){
System.out.println("Instance of Demo_instance created");
System.out.println("Thread instance created");
final Demo_instance my_inst = new Demo_instance();
Thread my_thread_1 = new Thread(){
@Override
public void run(){
my_inst.increment_val();
}
};
Thread my_thread_2 = new Thread(){
@Override
public void run(){
my_inst.decrement_val();
}
};
my_thread_1.start();
my_thread_2.start();
}
}输出结果
Instance of Demo_instance created Thread instance created The value of i after incrementing it is 7 The value of i after incrementing it is 7 The value of i after decrementing it is 6 The value of i after incrementing it is 8 The value of i after decrementing it is 7 The value of i after incrementing it is 8 The value of i after incrementing it is 8 The value of i after decrementing it is 7 The value of i after incrementing it is 9 The value of i after decrementing it is 8 The value of i after decrementing it is 7 The value of i after decrementing it is 6 The value of i after decrementing it is 5 The value of i after decrementing it is 4 The value of i after decrementing it is 3 The value of i after decrementing it is 2 The value of i after incrementing it is 3 The value of i after incrementing it is 4 The value of i after incrementing it is 5 The value of i after incrementing it is 6
名为“Demo_instance”的类定义了一个静态值，以及一个无效函数“increment_val”，该函数遍历一组数字，并将其递增并显示在控制台上。另一个名为“decrement_val”的函数每次都会迭代一组数字和减量，并在控制台上显示输出。
名为Demo的类包含创建该类实例并创建新线程的主要功能。重写此线程，并在此对象实例上调用run函数。第二个线程也做同样的事情。然后使用“开始”功能调用这两个线程。