Merge pull request #5477 from shidongwa/master

correct java main method signature, otherwise performance can't be ru…

performance-tests/src/test/java/com/baeldung/performancetests/benchmark/MappingFrameworksPerformance.java

@@ -97,7 +97,7 @@ public class MappingFrameworksPerformance {
         sourceCode = new SourceCode("This is source code!");
     }
 
-    public void main(String[] args) throws IOException, RunnerException {
+    public static void main(String[] args) throws IOException, RunnerException {
         org.openjdk.jmh.Main.main(args);
     }