Add logging

build.gradle

@@ -23,6 +23,7 @@ checkstyle {
 test {
     useJUnitPlatform()
     finalizedBy jacocoTestReport
+    jvmArgs('-ea')
 }
 
 task coverage(type: JacocoReport) {

src/main/java/seedu/address/logic/parser/RemarkCommandParser.java

@@ -4,16 +4,21 @@
 import static seedu.address.logic.Messages.MESSAGE_INVALID_COMMAND_FORMAT;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_REMARK;
 
+import seedu.address.commons.core.LogsCenter;
 import seedu.address.commons.core.index.Index;
 import seedu.address.logic.commands.RemarkCommand;
 import seedu.address.logic.parser.exceptions.ParseException;
 import seedu.address.model.person.Remark;
 
+import java.util.logging.Logger;
+
 
 /**
  * Parses input arguments and creates a new {@code RemarkCommand} object
  */
 public class RemarkCommandParser implements Parser<RemarkCommand> {
+    private static final Logger logger = LogsCenter.getLogger(RemarkCommandParser.class);
+
 
     /**
      * Parses the given {@code String} of arguments in the context of the {@code RemarkCommand}
@@ -35,8 +40,10 @@ public RemarkCommand parse(String args) throws ParseException {
         Remark remark = new Remark(remarkText);
 
         if (RemarkSyntaxHandler.isKeepRemark(args)) {
+            logger.fine("Keep remark syntax detected, remark kept accordingly");
             return new RemarkCommand(index, remark, true);
         }
+        logger.fine("Keep remark syntax not detected, replace with new remark");
 
         return new RemarkCommand(index, remark);
     }

src/main/java/seedu/address/ui/MainWindow.java

@@ -209,6 +209,7 @@ private CommandResult executeCommand(String commandText) throws CommandException
             }
 
             if (commandResult.isView()) {
+                logger.fine("View panel updating.... Viewing person at index " + logic.getLastViewedPersonIndex());
                 handleView();
             }