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Questions tagged [java]

Programming language and runtime environment that allows compiled Java programs to run unchanged on most hardware and software platforms

1835 questions
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Find Java install on CentOS Linux

I have new install of Centos 6.4 x64, it comes with openjdk 1.7.09. Obviously there are exploits/vulnerabilities in that version. The new version is 1.7.17, I try to install install it, and I don't know where it (gets installed) to. rpm -ql is no…
javajoe316
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RES keep growing but there is no GC shown via jstat?

We have a java application running on Centos 6.4 what we notice is RES value is cross 400m which is more then the allocated max heap that is 256m. According to jstat results as below there is no GC happening is this alarming situation? What…
biz14
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Java virtual hosting manager

I have a server system on which i want to host java web application's. I can do that only with tomcat and can host multiple application's, but i don't know how can i host multiple application's on root of tomcat, so that i can access those…
Adil Shaikh
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When the JVM is doing a complete GC, is it expected to see a large number of page fault/sec?

It is Window 2003 server. We are running some performance test, and what we see is: 1. In first 5 hours, the page fault/sec is very small, like 10 or 20 In the last 1 hour, the page fault jumps to 500 page fault/sec In the last 1 hour, we see the…
performanceuser
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Java web service works on http but not on https

I have SSL installed on my website. I wrote a java web service and deployed it in public_html/WEB-INF/service folder. Now I can access my service over http (like http://www.mydomain.com/services/myWebService?wsdl) but when I try it over https it…
AL̲̳I
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Connection Refused Error Java/Linux

I'm trying to move an existing project over to a new (linux) server environment (note, I have no direct access to the code nor do I have any knowledge about the project in general - talk about a great start), upon starting the project I receive the…
Dennis Röttger
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OpenSSO and Java applications with Apache AJP

I am setting up a single sign on system using OpenSSO. I have been able to install the Policy Agent 3.0 and configure the policy to require the user to log in before being able access the websites. I have 2 types of applications running. The first…
Joshua
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Filter ip traffic based on certain packet bits

I want to capture ip traffic at a linux machine based on the following bpf filter: ether[45]=0x11 and ether[68]=0x34 Incoming traffic is around 20Gbps and the filter discards 95% of the traffic. As my linux machine gets overloaded, I want to put a…
nkout
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Custom ENUM/NAPTR DNS Server

I need to configure custom DNS server to handle ENUM requests for VoIP calls I have custom built DNS server in Java that handles ENUM requests for my company's VoIP services. ENUM is used to dynamically route the calls and it uses own routing logic,…
Matthias
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Which apt-get package of java do I install if I want to use elasticsearch?

sudo apt-get install XXX? What java package should I install?
Alex
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Find TOMCAT 5.0.28 server start up time in windows,

I have two server instances TOMCAT 5.5 and TOMCAT 5.0.28, My application running on TOMCAT5.5. some body have stopped my TOMCAT5.5 and started TOMCAT 5.0.28 (May be accidentally). Can any body help me to find the TOMCAT 5.0.28 start up and shutdown…
Suman Kumar Gadhiraju
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Java group policy install succeeds but not fully installing

I am attempting to deploy java over group policy and am running into a few issues. Sometimes when the msi installs, the installer reports that it succeeded in the event viewer, but when I go to the java directory, I do not see the bin folder or any…
ptsoccer
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Ubuntu apache SOLR can't find com.mysql.jdbc.Driver

I have a problem using the data import handler with apache solr running on ubuntu 12.04 where it failes to load the mysql java driver with the error: Could not load driver: com.mysql.jdbc.Driver However I can see that it is loading the required…
Matthew
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Weblogic intensive CPU usage

I am using Weblogic 10.3.4 + Oracle DB both on Solaris machines (VM) Unfortunately last week our app hosted on Weblogic became very very slow not being able to serve new users coming (everything lasted for 1h). In order to find out the cause is we…
Cris
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java 7: should users be aware of changes in heap memory handling?

After installing the latest Java 7 Development Kit (Java SE 7u11) on my Windows 7 Professional 32bit PC with 4Gb RAM, I noticed I can't allocate much memory for Tomcat. Whereas these memory settings worked for Java Development Kit 6u38: set…
rvdb
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