--- old/test/jdk/com/sun/jdi/lib/jdb/JdbCommand.java	2018-10-11 19:51:31.000000000 -0700
+++ new/test/jdk/com/sun/jdi/lib/jdb/JdbCommand.java	2018-10-11 19:51:30.000000000 -0700
@@ -145,6 +145,9 @@
     public static JdbCommand stopAt(String targetClass, int lineNum) {
         return new JdbCommand("stop at " + targetClass + ":" + lineNum);
     }
+    public static JdbCommand stopThreadAt(String targetClass, int lineNum) {
+        return new JdbCommand("stop thread at " + targetClass + ":" + lineNum);
+    }
     public static JdbCommand stopIn(String targetClass, String methodName) {
         return new JdbCommand("stop in " + targetClass + "." + methodName);
     }