This is where pagination and filtering become very useful. Today, most web applications work with large volumes of data. Presenting all data at once can slow down the application and affect the user experience. This is where pagination and filtering become very useful. These techniques help users find information easily. They also help developers build fast and smooth applications.
In this blog, you will learn how to use pagination and filtering in a Java Full Stack app. The backend will use Spring Boot. The frontend will use Angular. These are important skills. A Java Full Stack Online Courseteaches these to help you build strong and responsive web apps.
Why Use Pagination and Filtering?
Pagination breaks big data into small parts. The user does not have to load everything at once. Data comes page by page. This makes the app faster and uses less memory.
Filtering helps users find what they need. They can search by name or category. It saves time and avoids scrolling through all the data.
Both techniques help improve the performance and usability of web applications.
Backend: Spring Boot for Pagination and Filtering
Let us start with the backend implementation using Spring Boot.
Step 1: Use PagingAndSortingRepository
public interface ProductRepository extends PagingAndSortingRepository<Product, Long> {
Page<Product> findByNameContaining(String name, Pageable pageable);
}
This interface provides built-in support for pagination. The method findByNameContaining helps filter records based on the product name.
Step 2: Service Layer Logic
public Page<Product> getProducts(String name, int page, int size) {
Pageable pageable = PageRequest.of(page, size);
return productRepository.findByNameContaining(name, pageable);
}
The service method receives search keywords and page details and then calls the repository.
Step 3: Controller Method
@GetMapping("/products")
public Page<Product> getProducts(
@RequestParam(defaultValue = "") String name,
@RequestParam(defaultValue = "0") int page,
@RequestParam(defaultValue = "10") int size) {
return productService.getProducts(name, page, size);
}
The controller handles API requests and returns the result in pages. A user can call the endpoint with query parameters such as ?name=mobile&page=1&size=5.
Frontend: Angular for Pagination and Filtering
Now, let us implement the frontend using Angular.
Step 1: Template for Search and Navigation
<input [(ngModel)]="searchText" (input)="fetchProducts()" placeholder="Search products">
<ul>
<li *ngFor="let product of products">{{ product.name }}</li>
</ul>
<button (click)="previousPage()" [disabled]="page === 0">Previous</button>
<button (click)="nextPage()">Next</button>
Step 2: Component TypeScript Code
products: any[] = [];
searchText: string = '';
page: number = 0;
size: number = 5;
fetchProducts() {
this.http.get(`/api/products?name=${this.searchText}&page=${this.page}&size=${this.size}`)
.subscribe((response: any) => {
this.products = response.content;
});
}
nextPage() {
this.page++;
this.fetchProducts();
}
previousPage() {
if (this.page > 0) {
this.page--;
this.fetchProducts();
}
}
This Angular code connects with the backend API and displays the paginated results. It also applies filtering based on the product name.
Best Practices for Pagination and Filtering
-
Always validate the page number and size
-
Avoid loading all records at once
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Provide clear navigation for users to move between pages
-
Use indexes to improve query performance
-
Limit filter inputs to protect against incorrect user data
Learning Through Projects
Pagination and filtering are practical skills used in real-world web development. Good knowledge of these methods helps developers build fast and easy-to-use apps.
If you want to learn them well, you should join a Java Full Stack Trainingprogram. These training programs offer real project experience and hands-on practice. You will learn how to handle databases, build APIs, and manage frontend and backend communication effectively.
Training Options in Noida
For learners who live in or near Noida, several training centers offer in-person classes. These classes provide live coding sessions, doubt clearing, and group learning. Many students prefer joining a Java Full Stack Training in Noida to build real skills in a professional setting. These classes often include industry-level projects, which help in job readiness.
Conclusion
Pagination and filtering are not just tools for organizing data. They are essential techniques for building fast, responsive, and efficient applications. With Spring Boot and Angular, you can implement both features easily and make your application more user-friendly.
By practicing these concepts and working on live projects, you will gain confidence in handling large datasets and improve your development workflow. Whether you are a beginner or looking to upgrade your skills, learning to implement pagination and filtering is a smart step in your full-stack journey.
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