Arbeitsblätter und Lösungen Hr. Kimmig

package ab31; import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; public class Reader { public static String readFile(String filename) { try { String ret = ""; FileReader fr = new FileReader(filename); BufferedReader br = new BufferedReader(fr); String zeile=""; while((zeile=br.readLine()) != null) { if(ret != "") ret += "\n"; ret += zeile; } br.close(); fr.close(); return ret; } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return ""; } }