not the same exit 1 (#219)

Author: JimmyShi22

src/main/java/org/fisco/bcos/sdk/demo/perf/DMCTransferDag.java

@@ -280,6 +280,7 @@ public void run() {
                             + total.toString()
                             + ", expectBalance is "
                             + expectBalance.toString());
+            System.exit(1);
         }
         System.out.println("check finished, total balance equal expectBalance!");
     }

src/main/java/org/fisco/bcos/sdk/demo/perf/DMCTransferMyself.java

@@ -276,6 +276,7 @@ public void run() {
                             + total.intValue()
                             + ", expectBalance is "
                             + expectBalance.intValue());
+            System.exit(1);
         }
         System.out.println("check finished! check finished, total balance equal expectBalance! ");
     }

src/main/java/org/fisco/bcos/sdk/demo/perf/DMCTransferRing.java

@@ -372,6 +372,7 @@ public void run() {
                             + total.toString()
                             + ", expectBalance is "
                             + expectBalance);
+            System.exit(1);
         }
         System.out.println(
                 "check finished, total balance equal expectBalance! " + total.intValue());

src/main/java/org/fisco/bcos/sdk/demo/perf/DMCTransferStar.java

@@ -290,8 +290,8 @@ public void run() {
                             + total.intValue()
                             + ", expectBalance is "
                             + expectBalance.intValue());
-        } else {
-            System.out.println("check finished, total balance equal expectBalance !");
+            System.exit(1);
         }
+        System.out.println("check finished, total balance equal expectBalance !");
     }
 }