String indent and transform

Definition

Java 12 added String.indent (add or remove leading spaces on every line) and String.transform (pass a string through a function so you can chain steps).

Example code

Indenting text and chaining a transformation

class Demo {
    public static void main(String[] args) {
        String block = "line one\nline two";
        System.out.print(block.indent(4));

        String result = "  java  "
                .transform(String::strip)
                .transform(s -> s + "!")
                .transform(String::toUpperCase);
        System.out.println(result);
    }
}

// Output:
//     line one
//     line two
// JAVA!