Java 11 Features

Java 11 is a Long-Term Support (LTS) release that introduced several important API enhancements, performance improvements, and new utilities for developers. It became the most widely adopted enterprise Java version after Java 8.

1. New String Methods

Java 11 introduced useful methods in the String class.

String text = "  Java  ";

System.out.println(text.strip());
System.out.println(text.isBlank());
System.out.println("Java\nPython".lines().count());

2. HTTP Client API

Java 11 introduced a modern HTTP client to replace the older HttpURLConnection.

HttpClient client = HttpClient.newHttpClient();

HttpRequest request = HttpRequest.newBuilder()
        .uri(URI.create("https://example.com"))
        .build();

HttpResponse response =
        client.send(request, HttpResponse.BodyHandlers.ofString());

System.out.println(response.body());

3. Running Java Files Without Compilation

Java 11 allows running single-file programs directly.

java HelloWorld.java

4. Local Variable Syntax for Lambda

Allows using var in lambda parameters.

list.forEach((var item) -> {
    System.out.println(item);
});

5. Collection to Array Method

Java 11 improved the toArray() method for collections.

List list = List.of("Java", "Python");

String[] array = list.toArray(String[]::new);

6. Removed Java EE Modules

Java 11 removed several outdated modules.

• JAXB
• JAX-WS
• CORBA

Quick Revision Summary