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POHow can I put,read,and modified my ArrayList Objects on a .txt file?
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copied!<p>Here is the modified code, when i run the program it works,but it doesn't work as i expected. I don't know why it won't write the lines that i typed after typing "add", and also it didn't show anything when i typed "show". Seems like i might missing something :</p> <pre><code>import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.nio.charset.Charset; import java.nio.file.FileSystems; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.StandardOpenOption; import java.util.ArrayList; import java.util.Collections; import java.util.Scanner; import java.util.List; public class unfinished { public static void main(String[] args) throws IOException { //String command; //int index = 0; Path path = FileSystems.getDefault().getPath("source.txt"); List<String> list = loadList(path); try(Scanner sc = new Scanner(System.in)){ // System.out.print("Enter the Command: "); String[] input = sc.nextLine().split(" "); while(input.length > 0 && !input[0].equals("exit")){ switch(input[0]){ case "add" : addToList(input, list); break; case "remove" : removeFromList(input, list); break; case "show": showList(input, list); break; } } input = sc.nextLine().split(" "); } saveList(path, list); } </code></pre> <p>here is the part of my old code for sorting and clear:</p> <pre><code>/** Collections.sort(MenuArray); int i = 0; for (String temporary : MenuArray) { System.out.println(++i + ". " + temporary); } //clear MenuArray.clear(); System.out.println("All objects have been cleared !"); */ private static void saveList(Path path, List<String> list) throws IOException { // TODO Auto-generated method stub Files.write(path, list, Charset.defaultCharset(), StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING); } private static void removeFromList(String[] input, List<String> list) { // TODO Auto-generated method stub } private static void showList(String[] input, List<String> list) { // TODO Auto-generated method stub } private static void addToList(String[] input, List<String> list) { // TODO Auto-generated method stub } private static List<String> loadList(Path path) throws IOException { // TODO Auto-generated method stub return Files.readAllLines(path, Charset.defaultCharset()); } } </code></pre>

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