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Editorial Team
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Asked: 2026-06-05T13:43:49+00:00

I am trying to debug the jar file with Remote JAVA Application debug. I

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I am trying to debug the jar file with Remote JAVA Application debug.
I am getting ‘Failed to connect to remote VM. Connection refused.’ error
following is stack trace..

java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:69)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at java.net.Socket.connect(Socket.java:528)
at java.net.Socket.(Socket.java:425)
at java.net.Socket.(Socket.java:208)
at org.eclipse.jdi.internal.connect.SocketTransportService$2.run(SocketTransportService.java:136)
at java.lang.Thread.run(Thread.java:722)

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1 Answer

  1. Editorial Team

    Did you remember to enable debugging on the JVM you are trying to connect to? This is done through JAVA_OPTS when you run the remote JVM.

    For example, to add debugging to tomcat, you would add these JAVA_OPTS when launching the java process:

    -Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n
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