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- public final class Logger {
- public void append(String message) {
- System.out.println(message);
- }
- }
- public final class AnyClass {
- private final Logger logger;
- public AnyClass(Logger logger) {
- this.logger = logger;
- }
- public void doSomething() {
- logger.append("I do something!");
- }
- }
- public final class Main {
- public static void main(String[] args) {
- final Logger logger = new Logger();
- final AnyClass any = new AnyClass(logger);
- any.doSomething();
- }
- }
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