java/lang/Thread.java

421                 g = security.getThreadGroup();
427                 g = parent.getThreadGroup();
525      *         SecurityManager#getThreadGroup SecurityManager.getThreadGroup()}.
527      *         SecurityManager.getThreadGroup()} returns {@code null}, the group
562      *         SecurityManager#getThreadGroup SecurityManager.getThreadGroup()}.
564      *         SecurityManager.getThreadGroup()} returns {@code null}, the group
622      *         SecurityManager#getThreadGroup SecurityManager.getThreadGroup()}.
624      *         SecurityManager.getThreadGroup()} returns {@code null}, the group
694      *         SecurityManager#getThreadGroup SecurityManager.getThreadGroup()}.
696      *         SecurityManager.getThreadGroup()} returns {@code null}, the group
745      *         SecurityManager#getThreadGroup SecurityManager.getThreadGroup()}.
747      *         SecurityManager.getThreadGroup()} returns {@code null}, the group
1179      * @see        #getThreadGroup()
1190         if((g = getThreadGroup()) != null) {
1251     public final ThreadGroup getThreadGroup() {
1272         return currentThread().getThreadGroup().activeCount();
1302         return currentThread().getThreadGroup().enumerate(tarray);
1500         ThreadGroup group = getThreadGroup();