Absolute & Relative Read , Chained Put-Method

Author: Ashleshk

Input & Output/005_Absolute&RelativeRead/.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

Input & Output/005_Absolute&RelativeRead/.idea/modules.xml

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+Line 1
+Line 2
+Line 3
+Line 4
+Line 5

Input & Output/005_Absolute&RelativeRead/.idea/workspace.xml

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+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+
+public class Main {
+
+    public static void main(String[] args) {
+
+        try (FileOutputStream binFile = new FileOutputStream("data.dat");
+             FileChannel binChannel = binFile.getChannel()) {
+
+            ByteBuffer buffer = ByteBuffer.allocate(100);
+            byte[] outputBytes = "Hello World!".getBytes();
+            buffer.put(outputBytes);
+            buffer.putInt(245);
+            buffer.putInt(-98765);
+            byte[] outputBytes2 = "Nice to meet you".getBytes();
+            buffer.put(outputBytes2);
+            buffer.putInt(1000);
+            buffer.flip();
+            binChannel.write(buffer);
+
+//            ByteBuffer buffer = ByteBuffer.allocate(outputBytes.length);
+//            buffer.put(outputBytes);
+//
+//            buffer.flip();
+//            int numBytes = binChannel.write(buffer);
+//            System.out.println("numBytes written was: " + numBytes);
+//
+//            ByteBuffer intBuffer = ByteBuffer.allocate(Integer.BYTES);
+//            intBuffer.putInt(245);
+//            intBuffer.flip();
+//            numBytes = binChannel.write(intBuffer);
+//            System.out.println("numBytes written was: " + numBytes);
+//
+//            intBuffer.flip();
+//            intBuffer.putInt(-98765);
+//            intBuffer.flip();
+//            numBytes = binChannel.write(intBuffer);
+//            System.out.println("numBytes written was: " + numBytes);
+//
+//            RandomAccessFile ra = new RandomAccessFile("data.dat", "rwd");
+//            FileChannel channel = ra.getChannel();
+//            outputBytes[0] = 'a';
+//            outputBytes[1] = 'b';
+//            buffer.flip();
+//            long numBytesRead = channel.read(buffer);
+//            if (buffer.hasArray()) {
+//                System.out.println("byte buffer = " + new String(buffer.array()));
+////                System.out.println("byte buffer = " + new String(outputBytes));
+//            }
+//
+//            // Absolute read
+//            intBuffer.flip();
+//            numBytesRead = channel.read(intBuffer);
+//            System.out.println(intBuffer.getInt(0));
+//            intBuffer.flip();
+//            numBytesRead = channel.read(intBuffer);
+//            intBuffer.flip();
+//            System.out.println(intBuffer.getInt(0));
+//            System.out.println(intBuffer.getInt());
+//
+//
+//            // Relative read
+//            //            intBuffer.flip();
+//            //            numBytesRead = channel.read(intBuffer);
+//            //            intBuffer.flip();
+//            //            System.out.println(intBuffer.getInt());
+//            //            intBuffer.flip();
+//            //            numBytesRead = channel.read(intBuffer);
+//            //            intBuffer.flip();
+//            //            System.out.println(intBuffer.getInt());
+//
+//            channel.close();
+//            ra.close();
+
+//            System.out.println("outputBytes = " + new String(outputBytes));
+
+//            RandomAccessFile ra = new RandomAccessFile("data.dat", "rwd");
+//            byte[] b = new byte[outputBytes.length];
+//            ra.read(b);
+//            System.out.println(new String(b));
+//
+//            long int1 = ra.readInt();
+//            long int2 = ra.readInt();
+//            System.out.println(int1);
+//            System.out.println(int2);
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}