add RAMDb and RAMInteractor

NoteBook/src/info/istamendil/notebook/App.java

@@ -3,6 +3,8 @@
 import info.istamendil.notebook.data.Db;
 import info.istamendil.notebook.data.DbException;
 import info.istamendil.notebook.data.FileDb;
+import info.istamendil.notebook.data.RAMDb;
+import info.istamendil.notebook.utils.RAMInteractor;
 import info.istamendil.notebook.utils.UserInteractor;
 import info.istamendil.notebook.utils.PunchedCardUserInteractor;
 import info.istamendil.notebook.utils.UserInteractorException;
@@ -41,8 +43,8 @@ public App(String[] args) {
   @Override
   public void init() {
     try {
-      this.terminal = new PunchedCardUserInteractor(Paths.get(App.PUNCH_CARD));
-      this.db = new FileDb(App.DB);
+      this.terminal = new RAMInteractor();
+      this.db = new RAMDb();
     } catch (UserInteractorException ex) {
       System.out.println("Couldn't start application due error:");
       System.err.println(ex.getMessage());

NoteBook/src/info/istamendil/notebook/data/RAMDb.java

@@ -0,0 +1,25 @@
+package info.istamendil.notebook.data;
+
+public class RAMDb implements Db {
+
+    protected String[] text;
+
+    public RAMDb() {
+        this.text = new String[0];
+    }
+
+    @Override
+    public void save(Object obj) throws DbException {
+        String[] text1 = new String[this.text.length + 1];
+        for (int i = 0; i < this.text.length; i++) {
+            text1[i] = this.text[i];
+        }
+        text1[this.text.length] = (String) obj;
+        this.text = text1.clone();
+    }
+
+    @Override
+    public Object[] findAll() throws DbException {
+        return (Object[]) this.text;
+    }
+}

NoteBook/src/info/istamendil/notebook/utils/PunchedCardUserInteractor.java

@@ -4,6 +4,7 @@
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.List;
+import java.util.Scanner;
 
 /**
  *

NoteBook/src/info/istamendil/notebook/utils/RAMInteractor.java

@@ -0,0 +1,45 @@
+package info.istamendil.notebook.utils;
+
+import java.util.Scanner;
+
+public class RAMInteractor implements UserInteractor {
+
+    protected final String[] lines;
+    protected int currentLine = 0;
+
+    public RAMInteractor() throws UserInteractorException {
+        Scanner scanner = new Scanner(System.in);
+        String line = scanner.nextLine();
+        if (line.equals("/")) {
+            throw new UserInteractorException("Nothing to input");
+        }
+        String[] lines = {line};
+        while (!line.equals("/")) {  // enter "/" for the end of the input
+            String[] lines1 = new String[lines.length + 1];
+            for (int i = 0; i < lines.length; i++) {
+                lines1[i] = lines[i];
+            }
+            lines1[lines.length] = line;
+            lines = lines1.clone();
+            line = scanner.nextLine();
+        }
+        this.lines = lines.clone();
+        this.currentLine = 0;
+    }
+
+    @Override
+    public String readCommand() throws UserInteractorReadException {
+        String command = null;
+        if(this.currentLine < this.lines.length){
+            command = this.lines[this.currentLine];
+            this.currentLine++;
+            System.out.println("<< " + command);
+        }
+        return command;
+    }
+
+    @Override
+    public void print(String output) throws UserInteractorWriteException {
+        System.out.println(">> " + output);
+    }
+}