Boost Java Development Efficiency with 10 Must‑Have IntelliJ IDEA Plugins

1. POJO to JSON

When you need to convert existing Java POJOs to JSON, the POJO to JSON plugin lets you right‑click a class and select MakeJson to generate JSON data, supporting nested objects and saving time compared to manual testing or using libraries like FastJSON.

2. Cool Request

Cool Request

is an IDEA‑based HTTP debugging tool similar to a lightweight Postman. It scans all Controller classes and methods annotated with @RequestMapping or other mapping annotations, grouping APIs by project. Clicking the generated icon opens a side panel where you can test endpoints, import/export CURL commands, manage environments, and export API definitions to Apifox.

3. CamelCase

The CamelCase plugin converts naming styles, allowing quick transformation between kebab‑case, SNAKE_CASE, PascalCase, camelCase, snake_case, and spaced formats. Example conversion of a static variable public static final String aaaBaa = "aaaBaa"; to uppercase with underscores is handled automatically.

public static final String aaaBaa = "aaaBaa";

4. any‑rule

any‑rule

provides a comprehensive regular‑expression dictionary. You can invoke AnyRule via right‑click to search, validate, and view examples for a wide range of regex patterns, making it a handy utility for developers.

5. Grep Console

Grep Console

customizes console output colors based on log levels, making logs easier to read. Example test method demonstrates colored output for INFO, ERROR, WARN, DEBUG, and TRACE logs.

@Test
public void logTest() {
    log.info("公众号：程序员小富");
    log.error("公众号：程序员小富");
    log.warn("公众号：程序员小富");
    log.debug("公众号：程序员小富");
    log.trace("公众号：程序员小富");
}

6. GenerateO2O

The GenerateO2O plugin automatically generates conversion code between PO objects and DTOs, eliminating the need to write repetitive Converter methods manually.

7. Smart Input

Smart Input

switches the input method automatically: it activates Chinese input when you write comments and switches back to English for code, removing the hassle of manual toggling.

8. Squaretest

Squaretest

creates mock unit tests automatically, producing high‑quality test code that can run out‑of‑the‑box. It is especially useful when unit‑test coverage is a KPI.

9. TONGYI Lingma

Alibaba’s AI coding plugin TONGYI Lingma generates code from natural‑language descriptions, offers context‑aware completions, and can produce unit tests for frameworks such as JUnit, Mockito, Spring Test, and pytest, similar to Squaretest.

10. Auto Filling Java Call Arguments

This plugin auto‑fills method call arguments when a method has many parameters, saving time by avoiding manual copy‑and‑paste of each argument.