jvm

问题 When I am trying to start Cassandra it shows me error like this I already did changes in the conf file also in env.sh, the file also. No options of similar type error is working for this. intx ThreadPriorityPolicy=42 is outside the allowed range [ 0 ... 1 ] Improperly specified VM option 'ThreadPriorityPolicy=42' Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit. Other Information java version "9.0.4" Java(TM) SE Runtime Environment

问题 Following on from my problem here previous issue trying to send java mail via tls/ssl i am now trying to add ssl debugging in Intellij. In the oracle article it gives an example java -Djavax.net.debug=all \ -Djavax.net.ssl.trustStore=trustStore SSLSocketClientWithClientAuth bongos 2001 /index.html How do i configure my environment for a standalone application which runs via main() method? 回答1: All you need to do is edit your Run Configuration. Run -> Edit Configurations And then under the VM

问题 I do not have access to the JVM settings since I am submitting code to be run elsewhere, so I can't follow the other Stack Overflow answers about extending stack size. Is there any way to do it from inside my Java file? The reason I want to do this (not really important): I am using recursion on a tree with 10^5 nodes. The average case is ok, but there is no guarantee on the shape of the tree. I am dealing with an edge case where the tree is just one long line. I get a StackOverflowError, but

问题 I do not have access to the JVM settings since I am submitting code to be run elsewhere, so I can't follow the other Stack Overflow answers about extending stack size. Is there any way to do it from inside my Java file? The reason I want to do this (not really important): I am using recursion on a tree with 10^5 nodes. The average case is ok, but there is no guarantee on the shape of the tree. I am dealing with an edge case where the tree is just one long line. I get a StackOverflowError, but

问题 I do not have access to the JVM settings since I am submitting code to be run elsewhere, so I can't follow the other Stack Overflow answers about extending stack size. Is there any way to do it from inside my Java file? The reason I want to do this (not really important): I am using recursion on a tree with 10^5 nodes. The average case is ok, but there is no guarantee on the shape of the tree. I am dealing with an edge case where the tree is just one long line. I get a StackOverflowError, but

问题 I do not have access to the JVM settings since I am submitting code to be run elsewhere, so I can't follow the other Stack Overflow answers about extending stack size. Is there any way to do it from inside my Java file? The reason I want to do this (not really important): I am using recursion on a tree with 10^5 nodes. The average case is ok, but there is no guarantee on the shape of the tree. I am dealing with an edge case where the tree is just one long line. I get a StackOverflowError, but

问题 Analysing a heap dump I look for instances of java.lang.ref.Finalizer class. java.lang.ref.Finalizer has 'next' and 'prev' member fields for maintaining linked list. I always get FileInputStream as a tail of the list and FileOutputStream as previous entry to it (analysed several heap dumps). File descriptors for FileInputStream and FileOutputStream are always 0 and 1 respectively: +---[Pending Finalization] java.lang.ref.Finalizer | | | +---queue java.lang.ref.ReferenceQueue [Stack Local] | |

问题 When attempting to attach an agent jar file onto another process running in java, I have came across the exception: com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file: target process not responding or HotSpot VM not loaded I was running linux, with java Oracle JDK 8_101 , however after answering this question I've realized the O.S does not matter for the cause of this problem. Edit: Answer: If you encounter this problem, the reason it occured for me is because I was

问题 When attempting to attach an agent jar file onto another process running in java, I have came across the exception: com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file: target process not responding or HotSpot VM not loaded I was running linux, with java Oracle JDK 8_101 , however after answering this question I've realized the O.S does not matter for the cause of this problem. Edit: Answer: If you encounter this problem, the reason it occured for me is because I was

问题 When attempting to attach an agent jar file onto another process running in java, I have came across the exception: com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file: target process not responding or HotSpot VM not loaded I was running linux, with java Oracle JDK 8_101 , however after answering this question I've realized the O.S does not matter for the cause of this problem. Edit: Answer: If you encounter this problem, the reason it occured for me is because I was