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Grade 10/Computer Science/ICS4U1/Reading And Writing To Files.md

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+## Reading and Outputting Files
+
+Outputing To Files
+- you can save it for future use
+- The printwriter class can be used to createa file and wrtie data to it
+- necessay imports:
+```java
+import java.io.IOException;
+import java.io.PrintWriter;
+```
+
+- Or:
+```
+import java.io.*;
+```
+
+- It is declared similarly to the scanner class
+
+Different types of file can be created for data to be written to, depends on the extension eg. ".txt" creates a text file while docsx creates a docx document
+
+```java
+code
+
+```
+
+## Reading To Files
+- Speed
+- Less errors
+- Easier to read individual cases
+- able to get data from sources other than keyboard
+- changing information is easy only to file
+- more efficient less time to test
+- large amounts of data can be entered quickly
+- at the testing stage, data can be easily
+
+## How
+- The file class is java's representation of a file or directoy path
+- it is used to identify/ocate the file that is to be read
+- code
+- Scanner calss is used to read from file
+
+## Sample Code
+```java
+import java.util.Scanner;
+import java.io.File;
+import java.io.IOException;
+public class ReadingToFileDemo {
+    public static void (String[]args) throws IOException {
+        File file = new File("test.txt); // the file you are reading from
+        Scanner read = new Scanner(file);
+        while(read.hasNext()) {
+            System.out.println(read.nextLine());
+            read.next();
+        }
+    }
+}
+```
+
+
+