我的应用程序不支持下一代java插件,但是在我的一个文档中,我看到调试此应用程序以将jvm运行时参数设置为-Xdebug -Xrunjdwp的步骤:transport = dt_socket,address = 8000,server = y,suspend = y .
现在问题出在这个参数上,Internet Explorer崩溃或挂起而没有加载任何东西.一旦删除此参数解决了这个问题,应用程序运行正常.
那么可以使用其他参数调试此应用程序吗?我试过-Xdebug -Xrunjdwp:transport = dt_socket,address = localhost:8000,server = y,suspend = y也行不通.
有人可以指导我远程调试吗?提前致谢...
我试图在java中学习rmi的概念.我成功地在我的机器上运行它并尝试在两台机器上运行但是失败了.Server.java有
System.setSecurityManager(new RMISecurityManager());
Addition Hello = new Addition();
Registry registry = LocateRegistry.createRegistry(5432);
//Addition stub = (Addition) UnicastRemoteObject.exportObject(Hello,6789);
registry.rebind("lookupthis", Hello);
System.out.println("Addition Server is ready.");
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Client.java有
Registry reg=LocateRegistry.getRegistry("[ip of server]",5432);
hello = (AdditionalInterface)Naming.lookup("lookupthis");
int result=hello.Add(9,10);
System.out.println("Result is :"+result);
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我必须做出哪些改变才能让它适用于两台机器.
请帮助我,提前致谢
我接受了来自elasticsearch教程的命令,
curl -XPUT "http://localhost:9200/movies/movie/1" -d" { "title": "The Godfather","director": "Francis Ford Coppola","year": 1972}"
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产生以下错误:
{
"error":"MapperParsingException[failed to parse]; nested: JsonParseException[Unrecognized token 'The': was expecting ('true', 'false' or 'null')
at [Source: [B@d809e3; line: 1, column: 27]]; ",
"status":400
}
curl: (6) Could not resolve host: Godfather,director
curl: (6) Could not resolve host: Ford
curl: (3) [globbing] unmatched close brace/bracket in column 19
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任何人都可以请求帮助,我需要做些什么来纠正这个错误?
我正在阅读Jakob Jenkov的一个并发教程.在此他提到有时通过等待线程可以错过notify()信号.这怎么可能?
public class MissedSignal {
//boolean wasSignalled = false;
public void doWait() {
synchronized (this) {
//if(!wasSignalled){
try {
this.wait();
} catch (InterruptedException e) {
}
//}
}
}
public void doNotify() {
synchronized (this) {
//wasSignalled = true;
this.notify();
}
}
}
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我无法理解此代码的注释部分的使用.我认为等待线程永远不会错过notify()信号?有人可以解释一下......我是java的新手,我没有在谷歌上找到这个答案....在此先感谢
我不理解下面的输出:
System.out.println(s1.equals(s2)+"a"); ->truea
System.out.println(s1==s2+"a"); ->false
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其中s1和s2被声明为相同的字符串"abc"即 String s1="abc"; String s2="abc";