Update all new Tasks

Task/File-input-output/Java/file-input-output-4.java

@@ -0,0 +1,14 @@
+import java.io.*;
+public class Test {
+  public static void main (String[] args) throws IOException {
+    BufferedReader br = new BufferedReader(new FileReader("input.txt"));
+    BufferedWriter bw = new BufferedWriter(new FileWriter("output.txt"));
+    String line;
+    while ((line = br.readLine()) != null) {
+      bw.write(line);
+      bw.newLine();
+    }
+    br.close();
+    bw.close();
+  }
+}