8361213: J2DAnalyzer should emit the score as a decimal

Reviewed-by: prr

Author: Eric Caspole

src/demo/share/java2d/J2DBench/src/j2dbench/report/J2DAnalyzer.java

@@ -270,7 +270,7 @@ public static void main(String[] argv) {
             } else {
                 double overallscore = totalscore[i]/numtests[i];
                 System.out.println("    Number of tests:  "+numtests[i]);
-                System.out.println("    Overall average:  "+overallscore);
+                System.out.printf( "    Overall average:  %-10.4f%n", overallscore);
                 System.out.println("    Best spread:      "+bestspread[i]+
                                    "% variance");
                 System.out.println("    Worst spread:     "+worstspread[i]+