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25 
26 package com.sun.jdi.connect;
27 
28 import com.sun.jdi.VirtualMachine;
29 import java.util.Map;
30 import java.io.IOException;
31 
32 /**
33  * A connector which can launch a target VM before connecting to it.
34  *
35  * @author Gordon Hirsch
36  * @since  1.3
37  */
38 @jdk.Exported
39 public interface LaunchingConnector extends Connector {
40     /**
41      * Launches an application and connects to its VM. Properties
42      * of the launch (possibly including options,
43      * main class, and arguments) are specified in
44      * <code>arguments</code>.
45      * The argument map associates argument name strings to instances
46      * of {@link Connector.Argument}. The default argument map for a
47      * connector can be obtained through {@link Connector#defaultArguments}.
48      * Argument map values can be changed, but map entries should not be
49      * added or deleted.
50      * <p>A target VM launched by a launching connector is not
51      * guaranteed to be stable until after the {@link com.sun.jdi.event.VMStartEvent} has been
52      * received.
53      * <p>
54      * <b>Important note:</b> If a target VM is launched through this
55      * funcctions, its output and error streams must be read as it
56      * executes. These streams are available through the
57      * {@link java.lang.Process Process} object returned by
58      * {@link com.sun.jdi.VirtualMachine#process}. If the streams are not periodically
59      * read, the target VM will stop executing when the buffers for these
60      * streams are filled.
61      *
62      * @param arguments the argument map to be used in launching the VM.
63      * @return the {@link VirtualMachine} mirror of the target VM.
64      * @throws java.io.IOException when unable to launch.
65      * Specific exceptions are dependent on the Connector implementation
66      * in use.
67      * @throws IllegalConnectorArgumentsException when one of the
68      * connector arguments is invalid.
69      * @throws VMStartException when the VM was successfully launched, but
70      * terminated with an error before a connection could be established.
71      */
launch(Map<String,? extends Connector.Argument> arguments)72     VirtualMachine launch(Map<String,? extends Connector.Argument> arguments)
73         throws IOException, IllegalConnectorArgumentsException,
74                VMStartException;
75 }
76