Write defensive checks in one line. Throws IllegalArgumentException if condition fails.

: Basic support (Reflection, Proxy, Type conversion). hutool-crypto : Simple wrappers for AES, RSA, and MD5. hutool-http : A lightweight HTTP client. hutool-json : Fast JSON parsing and creation. hutool-poi : Simplified Excel/Word manipulation. 💻 Common Code Examples 1. Date and Time Handling

Writes a collection of strings to a file, one per line.

Checks for null , empty string, or strings containing only whitespace (tab, space, newline). This is safer than StringUtils.isEmpty() .

Then start coding like Java was meant to be: productive, not pedantic.

// Write content to a file (auto-creates parent dirs) FileUtil.writeUtf8String("Server started", "/logs/status.txt");

// 2. Formatting (Uses {} placeholder, similar to SLF4J) String template = "Hello, {}! Welcome to {}."; String result = StrUtil.format(template, "User", "Hutool Guide"); // Output: "Hello, User! Welcome to Hutool Guide."

Hutool 39

Write defensive checks in one line. Throws IllegalArgumentException if condition fails.

Writes a collection of strings to a file, one per line. Write defensive checks in one line

Checks for null , empty string, or strings containing only whitespace (tab, space, newline). This is safer than StringUtils.isEmpty() . hutool-crypto : Simple wrappers for AES, RSA, and MD5

Then start coding like Java was meant to be: productive, not pedantic.

// Write content to a file (auto-creates parent dirs) FileUtil.writeUtf8String("Server started", "/logs/status.txt");