The abstract identifier that identifies the Java virtual machine. Initializes a new instance of this class. Throw new NullPointerException("id cannot be null") Once you open a JAR file, all the java classes in the JAR file will be displayed.
java) Click menu 'File Open File.' or just drag-and-drop the JAR file in the JD-GUI window -1.8.0jdk8u275-b01linux圆4.jar file.
#Com sun tools attach virtualmachine jar code
Throw new NullPointerException("provider cannot be null") attach ( VirtualMachineDescriptor vmd) Attaches to a Java virtual machine. Download JD-GUI to open JAR file and explore Java source code file (.class. Protected VirtualMachine( AttachProvider provider,
Once loaded the client detaches from the target VM.Ī VirtualMachine is safe for use by multiple concurrent threads. An application (typically a tool such as a managemet console or profiler) uses a VirtualMachine to load an agent into the target VM. VM are then used to construct the path to a management agent which is then In this example we attach to a Java virtual machine that is identified by String agent = home + parator + "lib" + parator Properties props = vm.getSystemProperties() VirtualMachine vm = VirtualMachine.attach("2177") The following example demonstrates how VirtualMachine may be used: Used to construct the path to agent that will be loaded into the target VM. Caused by: .AgentLoadException: Agent JAR not found or no Agent-Class attribute at .loadAgent. This can be useful in some environments where properties such as In addition to loading agents a VirtualMachine provides read access to the LoadAgentPath methods are used to load agents thatĪre deployed in a dynamic library and make use of the JVM Tools jar ttop-p 6344-n 20-o CPU Java home points to C: Program Files Java jre1.8. for a detailed description on how these agentsĪre loaded and started). The loadAgent method is used to load agents that are written in the Java Methods are used to load agents into target virtual machine. Once a reference to a virtual machine is obtained, the loadAgent , Implementation-dependent but is typically the process identifier (or pid) inĮnvironments where each Java virtual machine runs in its own operating system process.Īlternatively, a VirtualMachine instance is obtained by invoking theĪttach method with a VirtualMachineDescriptor obtainedįrom the list of virtual machine descriptors returned by the list method. With an identifier that identifies the target virtual machine. Profiler agent to profile the running application.Ī VirtualMachine is obtained by invoking the attach method Written in the Java Language might attach to a running application and load its VirtualMachine to load an agent into the target VM. The Java virtual machine to which it isĪttached is sometimes called the target virtual machine, or target VM.Īn application (typically a tool such as a managemet console or profiler) uses a LinuxVirtualMachine, HotSpotVirtualMachine, SolarisVirtualMachine, WindowsVirtualMachineĪ VirtualMachine represents a Java virtual machine to which this Abstract public class: VirtualMachine [javadoc |
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