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RESTful Web Services, by confirming to HTTP, does SUPPORT multiple types of RESPONSE (MIME) FORMATS e.g. XML, JSON, PLAIN etc.

RESTful Web Services, by confirming to HTTP, does support multiple types of response (MIME) formats e.g. XML, JSON, PLAIN etc.

@POST 
@CONSUMES({"application/plain","application/xml"}) 
PUBLIC VOID postMessage(STRING message) { 
... 
} 

@POST 
@Consumes({"application/plain","application/xml"}) 
public void postMessage(String message) { 
... 
} 

@CONSUMES can be APPLIED at both the CLASS and METHOD LEVELS. 

@Consumes can be applied at both the class and method levels. 

@POST 
@CONSUMES("text/plain") 
public VOID POSTMESSAGE(STRING message) { 
... 
} 

@POST 
@Consumes("text/plain") 
public void postMessage(String message) { 
... 
} 

@CONSUMES ANNOTATION is to be USED. 

@Consumes annotation is to be used. 

Resource method is CHOSEN DEPENDING on the most acceptable MEDIA type as DECLARED by the client in the request HEADER. 

e.g. 

Accept: text/plain. 

Resource method is chosen depending on the most acceptable media type as declared by the client in the request header. 

e.g. 

Accept: text/plain. 

@PRODUCES({"application/plain","application/xml", "application/json"}) 

@Produces({"application/plain","application/xml", "application/json"}) 

Yes. In the following example, the default MIME type is set as text/plain but doGetAsHtml method overrides it to text/html. 

@Path("/testResource") 
@PRODUCES("text/plain") 
PUBLIC class TestResource { 
@GET 
public STRING doGetAsPlainText() { 
... 
} 
 
@GET 
@Produces("text/html") 
public String doGetAsHtml() { 
... 
} 
} 

Yes. In the following example, the default MIME type is set as text/plain but doGetAsHtml method overrides it to text/html. 

@Path("/testResource") 
@Produces("text/plain") 
public class TestResource { 
@GET 
public String doGetAsPlainText() { 
... 
} 
 
@GET 
@Produces("text/html") 
public String doGetAsHtml() { 
... 
} 
} 

FALSE. It can be APPLIED at both the CLASS and METHOD LEVELS. 

False. It can be applied at both the class and method levels. 

@PRODUCES ANNOTATION is USED for this PURPOSE..

 e.g. 

@Produces("text/plain") 

@Produces annotation is used for this purpose..

 e.g. 

@Produces("text/plain") 

Yes. By DEFAULT, both should POINT to the same resource, although Jersey has arection MECHANISM that is DISABLED by default. 

Yes. By default, both should point to the same resource, although Jersey has arection mechanism that is disabled by default. 

A 404 (Not FOUND) RESPONSE will OCCUR. 

A 404 (Not Found) response will occur. 

@PATH("USERS/{USERNAME: [a-zA-Z][a-zA-Z_0-9]*}") 

@Path("users/{username: [a-zA-Z][a-zA-Z_0-9]*}") 

@PathParam can be used on method PARAMETER of a RESOURCE method to OBTAIN the value for a method parameter. 

e.g. 

@GET 
@Produces("text/plain") 
public String getWelcomeMsg(@PathParam("username") String userName) { 
... 
} 

@PathParam can be used on method parameter of a resource method to obtain the value for a method parameter. 

e.g. 

@GET 
@Produces("text/plain") 
public String getWelcomeMsg(@PathParam("username") String userName) { 
... 
} 

EMBEDDED VARIABLES are DENOTED by CURLY BRACES. 

Embedded variables are denoted by curly braces. 

Variables can be embedded within the URI syntax (CALLED URI path template). The variables are substituted at RUNTIME. 

@Path("/TEST/{USERNAME}") 

Variables can be embedded within the URI syntax (called URI path template). The variables are substituted at runtime. 

@Path("/test/{username}") 

The @Path ANNOTATION is USED to specify RELATIVE URI path. 

e.g. 

@Path("/test") 

The @Path annotation is used to specify relative URI path. 

e.g. 

@Path("/test") 

Method of a RESOURCE CLASS that is annotated with resource method designator ANNOTATION is called Resource Method. 

Method of a resource class that is annotated with resource method designator annotation is called Resource Method. 

Root resource CLASS is basically a POJO (Plain Old JAVA OBJECTS) that is ANNOTATED with @Path and has at least ONE method annotated with @Path or have at least a SINGLE resource method. 

Root resource class is basically a POJO (Plain Old JAVA Objects) that is annotated with @Path and has at least one method annotated with @Path or have at least a single resource method. 

@GET, @PUT, @POST, @DELETE 

@GET, @PUT, @POST, @DELETE 

HttpMethod annotation is used to ASSOCIATE the NAME of a HTTP METHOD with an annotation. 

HttpMethod annotation is used to associate the name of a HTTP method with an annotation. 

PUT is used to CREATE a resource and REPEATING the operation should NEVER create another copy of the resource. 

PUT is used to create a resource and repeating the operation should never create another copy of the resource. 

The @PUT ANNOTATION is USED to ANSWER HTTP PUT REQUESTS. 

The @PUT annotation is used to answer HTTP PUT requests. 

A METHOD is SAID to be idempotent if REPEATED calls to it does not cause DUPLICATES. 

A method is said to be idempotent if repeated calls to it does not cause duplicates. 

PUT MAPS to CREATE, GET maps to Retrieve, POST maps to UPDATE, DELETE maps to Delete. 

PUT maps to Create, GET maps to Retrieve, POST maps to Update, DELETE maps to Delete. 

PUT, GET, POST, DELETE.

PUT, GET, POST, DELETE.

javax.ws.rs.GET ANNOTATION SPECIFIES that the ANNOTATED method will SERVE HTTP Get request. 

javax.ws.rs.Get annotation specifies that the annotated method will serve HTTP Get request. 

A UNIFORM interface is shared between resources that comprises of a set of well‐defined operations, content TYPES and optionally supporting code‐on‐demand. 

A uniform interface is shared between resources that comprises of a set of well‐defined operations, content types and optionally supporting code‐on‐demand. 

UNIQUELY Addressable RESOURCES represent the APPLICATION STATE and functionality. 

Uniquely Addressable Resources represent the application state and functionality. 

Each resource is UNIQUELY addressable USING a universal syntax for USE in hypermedia links. 

Each resource is uniquely addressable using a universal syntax for use in hypermedia links. 

YES. But if you are USING NetBeans IDE 6.0, downloading is not REQUIRED. 

Yes. But if you are using NetBeans IDE 6.0, downloading is not required. 

JERSEY, RESTEasy, Restlet are to NAME a few. 

Jersey, RESTEasy, Restlet are to name a few. 

There is no FORMAL way of describing the Web Service interfaces. To overcome this, service producer and service CONSUMER agree on SCHEMAS that DESCRIBE the data being exchanged. 

There is no formal way of describing the Web Service interfaces. To overcome this, service producer and service consumer agree on schemas that describe the data being exchanged. 

• JAVA API for XML WEB SERVICES (JAX-WS) and 
• JAVA API for XML RESTFUL Web Services (JAX-RS). 

REST is STATELESS client-server ARCHITECTURE. 

REST is stateless client-server architecture. 

RESOURCES are identified by their UNIQUE URLS. 

Resources are identified by their unique URLs. 

RESTful Web Services are preferred when: 

a) The Web Services are completely stateless. 
b) When data can be cached to IMPROVE PERFORMANCE. 
c) Schema of data can be agreed between service CONSUMER and service provider. 
d) Bandwidth is limited. 

RESTful Web Services are preferred when: 

a) The Web Services are completely stateless. 
b) When data can be cached to improve performance. 
c) Schema of data can be agreed between service consumer and service provider. 
d) Bandwidth is limited.