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Null Object Example (1/2)

public interface Logger {

public void log(String msg);

}

import java.io.*;

class FileLogger implements Logger {

File myLogFile = new File("Applog.txt");

public void log(String msg) {

try {

FileWriter myFW = new FileWriter(myLogFile);

myFW.write(msg);

myFW.close();

} catch(IOException e) {

System.out.println("Exception while writing to log");

}

}

}

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