src/java.base/share/classes/java/lang/Thread.java

*** 143,153 ****
      private static native void registerNatives();
      static {
          registerNatives();
      }
  
!     private volatile char  name[];
      private int            priority;
      private Thread         threadQ;
      private long           eetop;
  
      /* Whether or not to single_step this thread. */
--- 143,153 ----
      private static native void registerNatives();
      static {
          registerNatives();
      }
  
!     private volatile String name;
      private int            priority;
      private Thread         threadQ;
      private long           eetop;
  
      /* Whether or not to single_step this thread. */
*** 364,374 ****
                        long stackSize, AccessControlContext acc) {
          if (name == null) {
              throw new NullPointerException("name cannot be null");
          }
  
!         this.name = name.toCharArray();
  
          Thread parent = currentThread();
          SecurityManager security = System.getSecurityManager();
          if (g == null) {
              /* Determine if it's an applet or not */
--- 364,374 ----
                        long stackSize, AccessControlContext acc) {
          if (name == null) {
              throw new NullPointerException("name cannot be null");
          }
  
!         this.name = name;
  
          Thread parent = currentThread();
          SecurityManager security = System.getSecurityManager();
          if (g == null) {
              /* Determine if it's an applet or not */
*** 1117,1127 ****
       * @see        #getName
       * @see        #checkAccess()
       */
      public final synchronized void setName(String name) {
          checkAccess();
!         this.name = name.toCharArray();
          if (threadStatus != 0) {
              setNativeName(name);
          }
      }
  
--- 1117,1131 ----
       * @see        #getName
       * @see        #checkAccess()
       */
      public final synchronized void setName(String name) {
          checkAccess();
!         if (name == null) {
!             throw new NullPointerException("name cannot be null");
!         }
! 
!         this.name = name;
          if (threadStatus != 0) {
              setNativeName(name);
          }
      }
  
*** 1130,1140 ****
       *
       * @return  this thread's name.
       * @see     #setName(String)
       */
      public final String getName() {
!         return new String(name, true);
      }
  
      /**
       * Returns the thread group to which this thread belongs.
       * This method returns null if this thread has died
--- 1134,1144 ----
       *
       * @return  this thread's name.
       * @see     #setName(String)
       */
      public final String getName() {
!         return name;
      }
  
      /**
       * Returns the thread group to which this thread belongs.
       * This method returns null if this thread has died