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Jul 16, 2019 Replied to a topic by lisisi › 程序员 › Notion、evernote 和 onenote 程序员适合用哪个做笔记？ |
有道云笔记
不过有些成型的东西直接写在博客上了
不过有些成型的东西直接写在博客上了
Mar 29, 2019 Replied to a topic by samray › 程序员 › 一条面试题引发的思考--浅谈 Java 公平锁与内存模型 |
package com.ljw.HelloJava;
import java.util.concurrent.TimeUnit;
import java.util.function.Predicate;
public class ABCThreads {
private static Integer index = 0;
private static Integer max = 6;
private static Object lock = new Object();
public static void main(String[] args) {
Thread a = getThread(i -> i % 3 == 0, "A");
Thread b = getThread(i -> i % 3 == 1, "B");
Thread c = getThread(i -> i % 3 == 2, "C");
a.start();
b.start();
c.start();
}
private static Thread getThread(Predicate<Integer> condition, String value) {
return new Thread(() -> {
while (true) {
synchronized (lock) {
while (!condition.test(index)) {
try {
lock.wait();
} catch (InterruptedException e) {
System.out.println(e.getMessage());
}
}
if (index >= max) {
return;
}
System.out.printf("index:%s,value:%s\n", index, value);
index++;
lock.notifyAll();
}
}
});
}
}
import java.util.concurrent.TimeUnit;
import java.util.function.Predicate;
public class ABCThreads {
private static Integer index = 0;
private static Integer max = 6;
private static Object lock = new Object();
public static void main(String[] args) {
Thread a = getThread(i -> i % 3 == 0, "A");
Thread b = getThread(i -> i % 3 == 1, "B");
Thread c = getThread(i -> i % 3 == 2, "C");
a.start();
b.start();
c.start();
}
private static Thread getThread(Predicate<Integer> condition, String value) {
return new Thread(() -> {
while (true) {
synchronized (lock) {
while (!condition.test(index)) {
try {
lock.wait();
} catch (InterruptedException e) {
System.out.println(e.getMessage());
}
}
if (index >= max) {
return;
}
System.out.printf("index:%s,value:%s\n", index, value);
index++;
lock.notifyAll();
}
}
});
}
}
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