我正在尝试创建一个程序,它将继续自动运行,而无需我做任何事情。我对如何在java中实现runnable感到有点困惑所以我可以创建一个线程,它将在一段时间内进入休眠状态,然后在睡眠期结束后重新运行程序。
public class work {
public static void main(String[] args) throws IOException, InterruptedException {
work test = new work();
test.information();
}
private ConfigurationBuilder OAuthBuilder() {
ConfigurationBuilder cb = new ConfigurationBuilder();
cb.setOAuthConsumerKey("dy1Vcv3iGYTqFif6m4oYpGBhq");
cb.setOAuthConsumerSecret("wKKJ1XOPZbxX0hywDycDcZf40qxfHvkDXYdINWYXGUH04qU0ha");
cb.setOAuthAccessToken("4850486261-49Eqv5mogjooJr8lm86hB20QRUpxeHq5iIzBLks");
cb.setOAuthAccessTokenSecret("QLeIKTTxJOwpSX4zEasREtGcXcqr0mY8wk5hRZKYrH5pd");
return cb;
}
public void information() throws IOException, InterruptedException {
ConfigurationBuilder cb = OAuthBuilder();
Twitter twitter = new TwitterFactory(cb.build()).getInstance();
try {
User user = twitter.showUser("ec12327");
Query query = new Query("gym fanatic");
query.setCount(100);
query.lang("en");
String rawJSON =null ;
String statusfile = null;
int i=0;
try {
QueryResult result = twitter.search(query);
for(int z = 0;z<5;z++){
for( Status status : result.getTweets()){
System.out.println("@" + status.getUser().getScreenName() + ":" + status.getText());
rawJSON = TwitterObjectFactory.getRawJSON(status);
statusfile = "results" + z +".txt";
storeJSON(rawJSON, statusfile);
i++;
}
}
System.out.println(i);
}
catch(TwitterException e) {
System.out.println("Get timeline: " + e + " Status code: " + e.getStatusCode());
if(e.getErrorCode() == 88){
Thread.sleep(900);
information();
}
}
} catch (TwitterException e) {
if (e.getErrorCode() == 88) {
System.err.println("Rate Limit exceeded!!!!!!");
Thread.sleep(90);
information();
try {
long time = e.getRateLimitStatus().getSecondsUntilReset();
if (time > 0)
Thread.sleep(900000);
information();
} catch (InterruptedException e1) {
e1.printStackTrace();
}
}
}
}
private static void storeJSON(String rawJSON, String fileName) throws IOException {
FileWriter fileWriter = null;
try
{
fileWriter = new FileWriter(fileName, true);
fileWriter.write(rawJSON);
fileWriter.write("\n");
}
catch(IOException ioe)
{
System.err.println("IOException: " + ioe.getMessage());
} finally {
if(fileWriter!=null) {
fileWriter.close();
}
}
}
}
答案 0 :(得分:0)
你有可分离的选项来用Java实现一个线程。
Runnable
当一个类实现Runnable
接口时,他必须覆盖run()
方法。可以将此runnable传递给Thread
的构造函数。然后可以使用start()
方法执行此线程。如果您想让这个线程永远运行并且睡眠,您可以执行以下操作:
public class HelloRunnable implements Runnable {
public void run() {
while(true){
Thread.sleep(1000);
System.out.println("Hello from a thread!");
}
}
public static void main(String args[]) {
(new Thread(new HelloRunnable())).start();
}
}
Thread
线程本身也有run()
方法。扩展线程时,您可以覆盖Thread的run()
方法并提供自己的实现。然后,您必须实例化自己的自定义线程,并以相同的方式启动它。再次,像以前一样,你可以这样做:
public class HelloThread extends Thread {
public void run() {
while(true){
Thread.sleep(1000);
System.out.println("Hello from a thread!");
}
}
public static void main(String args[]) {
(new HelloThread()).start();
}
}
答案 1 :(得分:0)
在前一个答案的基础上,您需要在Work类上扩展Thread或实现Runnable。扩展线程可能更容易。
public class work extends Thread {
public void run() {
// your app will run forever, consider a break mechanism
while(true) {
// sleep for a while, otherwise you'll max your CPU
Thread.sleep( 1000 );
this.information();
}
}
public static void main(String[] args) throws IOException, InterruptedException {
work test = new work();
test.start();
}
// ... rest of your class
}
答案 2 :(得分:0)
public static void main(String[] args){
Thread thread = new Thread(runnable); // create new thread instance
thread.start(); // start thread
}
public static Runnable runnable = new Runnable(){
@Override
public void run(){
final int DELAY = 500;
while(true){
try{
// Code goes here;
Thread.sleep(DELAY)
} catch(Exception e){
e.printStackTrace();
}
}
}
}