Example usage for java.lang ThreadGroup getName

Introduction

In this page you can find the example usage for java.lang ThreadGroup getName.

Prototype

public final String getName()

Source Link

Document

Returns the name of this thread group.

Usage

From source file:Main.java

public static void main(String[] args) {

    ThreadGroup group = new ThreadGroup("admin");
    Thread t = new Thread(group, "website");

    System.out.println("Threadgroup = " + group.getName());

    String str = group.toString();
    System.out.println(str);//from  www. j  a va  2  s. c o m
}

From source file:Main.java

public static void main(String[] args) {
    Thread t1 = Thread.currentThread();

    ThreadGroup tg1 = t1.getThreadGroup();

    System.out.println("Current thread's  name:  " + t1.getName());
    System.out.println("Current thread's  group  name:  " + tg1.getName());

    Thread t2 = new Thread("my  new thread");

    ThreadGroup tg2 = t2.getThreadGroup();
    System.out.println("New  thread's name:  " + t2.getName());
    System.out.println("New  thread's  group  name:  " + tg2.getName());
}

From source file:Main.java

private static String getThreadGroupName(Thread thread) {
    ThreadGroup threadGroup = thread.getThreadGroup();
    return (threadGroup == null) ? "stopped" : threadGroup.getName();
}

From source file:Main.java

public static ThreadGroup getThreadGroupByName(String name) {
    if (name != null) {
        final ThreadGroup[] groups = getAllThreadGroups();
        for (ThreadGroup group : groups) {
            if (group.getName().equals(name)) {
                return group;
            }//  w w w. jav  a  2s.c o m
        }
    }

    return null;
}

From source file:Main.java

/**
 * Get the thread group with the given name. A null is returned if no such
 * group is found. If more than one group has the same name, the first one
 * found is returned./*  ww  w.j a  va  2s  . co  m*/
 * 
 * @param name
 *        the thread group name to search for
 * @return the thread group, or null if not found
 * @throws NullPointerException
 *         if the name is null
 */
public static ThreadGroup getThreadGroup(final String name) {
    if (name == null) {
        throw new NullPointerException("Null name");
    }
    final ThreadGroup[] groups = getAllThreadGroups();
    for (ThreadGroup group : groups) {
        if (group.getName().equals(name))
            return group;
    }
    return null;
}

From source file:Main.java

/**
 * Get thread group by name/*from   w  w w.j  a  v  a  2 s  . c  om*/
 *
 * @param name
 * @param root
 * @return thread group or null
 */
private static ThreadGroup getThreadGroupByName(String name, ThreadGroup root) {
    if (root == null) {
        root = getRootThreadGroup();
    }

    int num_groups = root.activeGroupCount();
    ThreadGroup[] groups = new ThreadGroup[num_groups];
    root.enumerate(groups, false);

    for (int i = 0; i < num_groups; i++) {
        ThreadGroup threadGroup = groups[i];
        if (name.equals(threadGroup.getName())) {
            return threadGroup;
        } else {
            threadGroup = getThreadGroupByName(name, threadGroup);
            if (threadGroup != null) {
                return threadGroup;
            }
        }
    }
    return null;
}

From source file:Main.java

/**
 * Print a stack trace of the current thread.
 *//*from  www . ja  v a  2  s.  c  o m*/
public static void printFullStackTrace() {
    Thread thread = Thread.currentThread();
    System.out.printf("  Thread id: %d, name: %s, state: %s, daemon: %s, EDT: %s\n", thread.getId(),
            thread.getName(), thread.getState(), thread.isDaemon(), EventQueue.isDispatchThread());
    ThreadGroup group = thread.getThreadGroup();
    System.out.printf("    priority: %d, group: %s, group count: %d\n", thread.getPriority(), group.getName(),
            group.activeCount());
    StackTraceElement[] backtrace = thread.getStackTrace();

    for (StackTraceElement e : backtrace) {
        System.out.printf("    Stack Trace: %s\n", e);
    }
}

From source file:Main.java

/**
 * Get the thread group with the given name.  A null is
 * returned if no such group is found.  If more than one
 * group has the same name, the first one found is returned.
 *
 * @param   name   the thread group name to search for
 * @return      the thread group, or null if not found
 * @throws   NullPointerException/*from  w  w  w.j  a v  a  2 s.  c o m*/
 *          if the name is null
 */
public static ThreadGroup getThreadGroup(final String name) {
    if (name == null)
        throw new NullPointerException("Null name");
    final ThreadGroup[] groups = getAllThreadGroups();
    for (ThreadGroup group : groups)
        if (group.getName().equals(name))
            return group;
    return null;
}

From source file:Main.java

/**
 * Print diagnostic info about the current thread.
 *///from w w w  . j  a  v  a2s.  com
public static void printThreadInfo() {
    Thread thread = Thread.currentThread();
    System.out.printf("  Thread id: %d, name: %s, state: %s, daemon: %s, EDT: %s\n", thread.getId(),
            thread.getName(), thread.getState(), thread.isDaemon(), EventQueue.isDispatchThread());
    ThreadGroup group = thread.getThreadGroup();
    System.out.printf("    priority: %d, group: %s, group count: %d\n", thread.getPriority(), group.getName(),
            group.activeCount());
    StackTraceElement[] backtrace = thread.getStackTrace();
    if (backtrace.length > 2) {
        System.out.printf("    trace[2]: %s\n", backtrace[2]);
    }
}

From source file:Main.java

public static String dumpThreads() {
    StringBuilder sb = new StringBuilder("\n");
    ThreadGroup tg, parent = Thread.currentThread().getThreadGroup();
    while ((tg = parent.getParent()) != null) {
        parent = tg;//from w  w w . j  a  va2 s.c o  m
    }
    int size = 2 * parent.activeGroupCount();
    ThreadGroup[] list = new ThreadGroup[size];
    int actual = parent.enumerate(list, true);
    //System.out.print("found " + list);
    sb.append("tgs: " + actual + "\n");
    if (list != null && list.length > 0) {
        for (ThreadGroup g : list) {
            if (g == null) {
                continue;
            }
            sb.append("   " + g.getName() + ": " + g.activeCount() + "\n");
            Thread[] threads = new Thread[g.activeCount()];
            g.enumerate(threads, false);
            for (Thread t : threads) {
                if (t != null) {
                    sb.append("     " + t.getName() + "\n");
                }
            }
        }
    } else {
        System.out.println("empty thread group list");
    }
    return sb.toString() + "\n";
}