removed exception folder for now, added build directory to gitignore

.gitignore

-HELP.md
-.gradle
+#HELP.md
+#.gradle
 build/
-!gradle/wrapper/gradle-wrapper.jar
-!**/src/main/**/build/
-!**/src/test/**/build/
-
-### STS ###
-.apt_generated
-.classpath
-.factorypath
-.project
-.settings
-.springBeans
-.sts4-cache
-bin/
-!**/src/main/**/bin/
-!**/src/test/**/bin/
-
-### IntelliJ IDEA ###
-.idea
-*.iws
-*.iml
-*.ipr
-out/
-!**/src/main/**/out/
-!**/src/test/**/out/
-
-### NetBeans ###
-/nbproject/private/
-/nbbuild/
-/dist/
-/nbdist/
-/.nb-gradle/
-
-### VS Code ###
-.vscode/
+#!gradle/wrapper/gradle-wrapper.jar
+#!**/src/main/**/build/
+#!**/src/test/**/build/
+#
+#### STS ###
+#.apt_generated
+#.classpath
+#.factorypath
+#.project
+#.settings
+#.springBeans
+#.sts4-cache
+#bin/
+#!**/src/main/**/bin/
+#!**/src/test/**/bin/
+#
+#### IntelliJ IDEA ###
+#.idea
+#*.iws
+#*.iml
+#*.ipr
+#out/
+#!**/src/main/**/out/
+#!**/src/test/**/out/
+#
+#### NetBeans ###
+#/nbproject/private/
+#/nbbuild/
+#/dist/
+#/nbdist/
+#/.nb-gradle/
+#
+#### VS Code ###
+#.vscode/

src/main/java/com/StudentServices/MarksService/exception/ErrorDetails.java

-package com.StudentServices.MarksService.exception;
-
-import java.util.Date;
-
-public class ErrorDetails {
-  private Date timestamp;
-  private String message;
-  private String details;
-
-  public ErrorDetails(Date timestamp, String message, String details) {
-    this.timestamp = timestamp;
-    this.message = message;
-    this.details = details;
-  }
-
-  public Date getTimestamp() {
-    return timestamp;
-  }
-
-  public void setTimestamp(Date timestamp) {
-    this.timestamp = timestamp;
-  }
-
-  public String getMessage() {
-    return message;
-  }
-
-  public void setMessage(String message) {
-    this.message = message;
-  }
-
-  public String getDetails() {
-    return details;
-  }
-
-  public void setDetails(String details) {
-    this.details = details;
-  }
-}

src/main/java/com/StudentServices/MarksService/exception/GlobalExceptionHandler.java

-package com.StudentServices.MarksService.exception;
-
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.context.request.WebRequest;
-import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
-
-import java.util.Date;
-
-public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {
-  public ResponseEntity<?> resourceNotFoundException(ResourceNotFoundException ex, WebRequest webRequest) {
-    com.nisum.employeeservice.exception.ErrorDetails errorDetails = new com.nisum.employeeservice.exception.ErrorDetails(new Date(), ex.getMessage(), webRequest.getDescription(false));
-    return new ResponseEntity<>(errorDetails, HttpStatus.NOT_FOUND);
-  }
-}

src/main/java/com/StudentServices/MarksService/exception/ResourceNotFoundException.java

-package com.StudentServices.MarksService.exception;
-
-import org.springframework.http.HttpStatus;
-import org.springframework.web.bind.annotation.ResponseStatus;
-
-@ResponseStatus(value = HttpStatus.NOT_FOUND)
-public class ResourceNotFoundException extends Exception {
-  public ResourceNotFoundException(String message) {
-    super(message);
-  }
-}