@PathVariable for URL parameters in Spring Boot - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to bind the URL parameter to the method argument.

Spring Boot

@GetMapping("/users/{id}")
public String getUser(@[1] String id) {
    return "User ID: " + id;
}

Drag options to blanks, or click blank then click option'

ARequestHeader

BRequestParam

CRequestBody

DPathVariable

Attempts:

3 left

💡 Hint

Common Mistakes

Using @RequestParam instead of @PathVariable

Forgetting to add the annotation

Using @RequestBody for URL parameters

The @PathVariable annotation binds the URL path parameter {id} to the method argument.

2fill in blank

medium

Complete the code to specify the path variable name explicitly.

Spring Boot

@GetMapping("/products/{productId}")
public String getProduct(@PathVariable("[1]") String id) {
    return "Product ID: " + id;
}

Drag options to blanks, or click blank then click option'

Aid

Bpid

CproductId

Dproduct

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different name than the URL path variable

Omitting the annotation parameter when names differ

The string inside @PathVariable must match the name in the URL path {productId}.

3fill in blank

hard

Fix the error in the method parameter to correctly bind the path variable.

Spring Boot

@GetMapping("/orders/{orderId}")
public String getOrder(@PathVariable("[1]") String id) {
    return "Order ID: " + id;
}

Drag options to blanks, or click blank then click option'

AorderId

B(orderId)

C"orderId"

D("orderId")

Attempts:

3 left

💡 Hint

Common Mistakes

Missing parentheses

Missing quotes around the variable name

Using variable name without quotes

The @PathVariable annotation requires the path variable name as a string in parentheses.

4fill in blank

hard

Fill both blanks to create a method that binds two path variables.

Spring Boot

@GetMapping("/users/{userId}/posts/{postId}")
public String getPost(@PathVariable("[1]") String user, @PathVariable("[2]") String post) {
    return "User: " + user + ", Post: " + post;
}

Drag options to blanks, or click blank then click option'

AuserId

Bpost

CpostId

Duser

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the path variable names

Using variable names instead of path variable names

Each @PathVariable must match the corresponding name in the URL path.

5fill in blank

hard

Fill all three blanks to create a method that binds three path variables with explicit names.

Spring Boot

@GetMapping("/shops/{shopId}/categories/{categoryId}/items/{itemId}")
public String getItem(@PathVariable("[1]") String shop, @PathVariable("[2]") String category, @PathVariable("[3]") String item) {
    return "Shop: " + shop + ", Category: " + category + ", Item: " + item;
}

Drag options to blanks, or click blank then click option'

AshopId

BcategoryId

CitemId

Ditem

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable names instead of path variable names

Mixing up the order of path variables

Each @PathVariable annotation must match the corresponding path variable name in the URL.