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分享Java 中找不到符号的错误
class MyThread implements Runnable
{
public void run()
{
for(int i=0;i<100;i++)
{
System.out.println(Thread.currentThread().getName()+"的i值为:"+i);
}
}
}
public class ThreadPoolTest1
{
public static void main(String[] args)
throws Exception
{
ExecutorService pool=Executors.newFixedThreadPool(4);
//ExecutorService pool = Executors.newFixedThreadPool(6);
pool.submit(new MyThread());
pool.submit(new MyThread());
pool.shutdown();
}
}
报的错误是ThreadPoolTest1.java:17: 错误: 找不到符号
ExecutorService pool=Executors.newFixedThreadPool(4);
^
符号: 类 ExecutorService
位置: 类 ThreadPoolTest1
ThreadPoolTest1.java:17: 错误: 找不到符号
ExecutorService pool=Executors.newFixedThreadPool(4);
^
符号: 变量 Executors
位置: 类 ThreadPoolTest1
2 个错误
{
public void run()
{
for(int i=0;i<100;i++)
{
System.out.println(Thread.currentThread().getName()+"的i值为:"+i);
}
}
}
public class ThreadPoolTest1
{
public static void main(String[] args)
throws Exception
{
ExecutorService pool=Executors.newFixedThreadPool(4);
//ExecutorService pool = Executors.newFixedThreadPool(6);
pool.submit(new MyThread());
pool.submit(new MyThread());
pool.shutdown();
}
}
报的错误是ThreadPoolTest1.java:17: 错误: 找不到符号
ExecutorService pool=Executors.newFixedThreadPool(4);
^
符号: 类 ExecutorService
位置: 类 ThreadPoolTest1
ThreadPoolTest1.java:17: 错误: 找不到符号
ExecutorService pool=Executors.newFixedThreadPool(4);
^
符号: 变量 Executors
位置: 类 ThreadPoolTest1
2 个错误
...全文
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yitianbu 2014-11-20
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谢谢
yitianbu 2014-11-20
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谢谢正解
ghx287524027 2014-11-20
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添加黑体的这两行即可。
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
class MyThread06 implements Runnable
{
public void run()
{
for(int i=0;i<100;i++)
{
System.out.println(Thread.currentThread().getName()+"的i值为:"+i);
}
}
}
public class ThreadPoolTest1
{
public static void main(String[] args)
throws Exception
{
ExecutorService pool=Executors.newFixedThreadPool(4);
//ExecutorService pool = Executors.newFixedThreadPool(6);
pool.submit(new MyThread06());
pool.submit(new MyThread06());
pool.shutdown();
}
}
结果：
pool-1-thread-1的i值为:0
pool-1-thread-1的i值为:1
pool-1-thread-1的i值为:2
pool-1-thread-1的i值为:3
pool-1-thread-1的i值为:4
pool-1-thread-1的i值为:5
pool-1-thread-1的i值为:6
pool-1-thread-1的i值为:7
pool-1-thread-1的i值为:8
pool-1-thread-1的i值为:9
pool-1-thread-1的i值为:10
pool-1-thread-1的i值为:11
pool-1-thread-1的i值为:12
pool-1-thread-1的i值为:13
pool-1-thread-1的i值为:14
pool-1-thread-1的i值为:15
pool-1-thread-1的i值为:16
pool-1-thread-1的i值为:17
pool-1-thread-1的i值为:18
pool-1-thread-1的i值为:19
pool-1-thread-1的i值为:20
pool-1-thread-1的i值为:21
pool-1-thread-1的i值为:22
pool-1-thread-1的i值为:23
pool-1-thread-1的i值为:24
pool-1-thread-2的i值为:0
pool-1-thread-2的i值为:1
pool-1-thread-2的i值为:2
pool-1-thread-2的i值为:3
pool-1-thread-2的i值为:4
pool-1-thread-2的i值为:5
pool-1-thread-2的i值为:6
pool-1-thread-2的i值为:7
pool-1-thread-2的i值为:8
pool-1-thread-2的i值为:9
pool-1-thread-2的i值为:10
pool-1-thread-2的i值为:11
pool-1-thread-2的i值为:12
pool-1-thread-2的i值为:13
pool-1-thread-2的i值为:14
pool-1-thread-2的i值为:15
pool-1-thread-2的i值为:16
pool-1-thread-2的i值为:17
pool-1-thread-2的i值为:18
pool-1-thread-2的i值为:19
pool-1-thread-2的i值为:20
pool-1-thread-2的i值为:21
pool-1-thread-2的i值为:22
pool-1-thread-2的i值为:23
pool-1-thread-2的i值为:24
pool-1-thread-2的i值为:25
pool-1-thread-2的i值为:26
pool-1-thread-2的i值为:27
pool-1-thread-2的i值为:28
pool-1-thread-2的i值为:29
pool-1-thread-2的i值为:30
pool-1-thread-2的i值为:31
pool-1-thread-2的i值为:32
pool-1-thread-2的i值为:33
pool-1-thread-2的i值为:34
pool-1-thread-2的i值为:35
pool-1-thread-2的i值为:36
pool-1-thread-2的i值为:37
pool-1-thread-2的i值为:38
pool-1-thread-2的i值为:39
pool-1-thread-2的i值为:40
pool-1-thread-2的i值为:41
pool-1-thread-2的i值为:42
pool-1-thread-2的i值为:43
pool-1-thread-2的i值为:44
pool-1-thread-2的i值为:45
pool-1-thread-2的i值为:46
pool-1-thread-2的i值为:47
pool-1-thread-2的i值为:48
pool-1-thread-2的i值为:49
pool-1-thread-2的i值为:50
pool-1-thread-2的i值为:51
pool-1-thread-2的i值为:52
pool-1-thread-2的i值为:53
pool-1-thread-2的i值为:54
pool-1-thread-2的i值为:55
pool-1-thread-2的i值为:56
pool-1-thread-2的i值为:57
pool-1-thread-2的i值为:58
pool-1-thread-2的i值为:59
pool-1-thread-2的i值为:60
pool-1-thread-2的i值为:61
pool-1-thread-2的i值为:62
pool-1-thread-2的i值为:63
pool-1-thread-2的i值为:64
pool-1-thread-2的i值为:65
pool-1-thread-2的i值为:66
pool-1-thread-2的i值为:67
pool-1-thread-2的i值为:68
pool-1-thread-2的i值为:69
pool-1-thread-2的i值为:70
pool-1-thread-2的i值为:71
pool-1-thread-2的i值为:72
pool-1-thread-2的i值为:73
pool-1-thread-2的i值为:74
pool-1-thread-2的i值为:75
pool-1-thread-2的i值为:76
pool-1-thread-2的i值为:77
pool-1-thread-2的i值为:78
pool-1-thread-2的i值为:79
pool-1-thread-2的i值为:80
pool-1-thread-2的i值为:81
pool-1-thread-2的i值为:82
pool-1-thread-2的i值为:83
pool-1-thread-2的i值为:84
pool-1-thread-2的i值为:85
pool-1-thread-2的i值为:86
pool-1-thread-2的i值为:87
pool-1-thread-2的i值为:88
pool-1-thread-2的i值为:89
pool-1-thread-2的i值为:90
pool-1-thread-2的i值为:91
pool-1-thread-2的i值为:92
pool-1-thread-2的i值为:93
pool-1-thread-2的i值为:94
pool-1-thread-2的i值为:95
pool-1-thread-2的i值为:96
pool-1-thread-2的i值为:97
pool-1-thread-2的i值为:98
pool-1-thread-2的i值为:99
pool-1-thread-1的i值为:25
pool-1-thread-1的i值为:26
pool-1-thread-1的i值为:27
pool-1-thread-1的i值为:28
pool-1-thread-1的i值为:29
pool-1-thread-1的i值为:30
pool-1-thread-1的i值为:31
pool-1-thread-1的i值为:32
pool-1-thread-1的i值为:33
pool-1-thread-1的i值为:34
pool-1-thread-1的i值为:35
pool-1-thread-1的i值为:36
pool-1-thread-1的i值为:37
pool-1-thread-1的i值为:38
pool-1-thread-1的i值为:39
pool-1-thread-1的i值为:40
pool-1-thread-1的i值为:41
pool-1-thread-1的i值为:42
pool-1-thread-1的i值为:43
pool-1-thread-1的i值为:44
pool-1-thread-1的i值为:45
pool-1-thread-1的i值为:46
pool-1-thread-1的i值为:47
pool-1-thread-1的i值为:48
pool-1-thread-1的i值为:49
pool-1-thread-1的i值为:50
pool-1-thread-1的i值为:51
pool-1-thread-1的i值为:52
pool-1-thread-1的i值为:53
pool-1-thread-1的i值为:54
pool-1-thread-1的i值为:55
pool-1-thread-1的i值为:56
pool-1-thread-1的i值为:57
pool-1-thread-1的i值为:58
pool-1-thread-1的i值为:59
pool-1-thread-1的i值为:60
pool-1-thread-1的i值为:61
pool-1-thread-1的i值为:62
pool-1-thread-1的i值为:63
pool-1-thread-1的i值为:64
pool-1-thread-1的i值为:65
pool-1-thread-1的i值为:66
pool-1-thread-1的i值为:67
pool-1-thread-1的i值为:68
pool-1-thread-1的i值为:69
pool-1-thread-1的i值为:70
pool-1-thread-1的i值为:71
pool-1-thread-1的i值为:72
pool-1-thread-1的i值为:73
pool-1-thread-1的i值为:74
pool-1-thread-1的i值为:75
pool-1-thread-1的i值为:76
pool-1-thread-1的i值为:77
pool-1-thread-1的i值为:78
pool-1-thread-1的i值为:79
pool-1-thread-1的i值为:80
pool-1-thread-1的i值为:81
pool-1-thread-1的i值为:82
pool-1-thread-1的i值为:83
pool-1-thread-1的i值为:84
pool-1-thread-1的i值为:85
pool-1-thread-1的i值为:86
pool-1-thread-1的i值为:87
pool-1-thread-1的i值为:88
pool-1-thread-1的i值为:89
pool-1-thread-1的i值为:90
pool-1-thread-1的i值为:91
pool-1-thread-1的i值为:92
pool-1-thread-1的i值为:93
pool-1-thread-1的i值为:94
pool-1-thread-1的i值为:95
pool-1-thread-1的i值为:96
pool-1-thread-1的i值为:97
pool-1-thread-1的i值为:98
pool-1-thread-1的i值为:99
wyc_ 2014-11-20
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把ExecutorService import进来
