exceptions-readandwrite/src/main/java/rocks/zipcode/SpecialCharDocument.java

package rocks.zipcode;

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author leon on 18/11/2018.
 */
public class SpecialCharDocument extends Document {
    public SpecialCharDocument(String fileName) throws IOException {
        super(fileName);
    }

    @Override
    public void write(String contentToBeWritten) throws IOException {

        if (this.isSpecialCharacters(contentToBeWritten)){
            super.write(contentToBeWritten);


        }else{

            throw  new  IllegalArgumentException();
        }
    }

    private Boolean isSpecialCharacters(String s) {

        Pattern pattern = Pattern.compile("[$&+,:;=?@#|'<>.^*()%!-]", Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(s);
        boolean b = matcher.find();
        return b;

    }
}