ByteBuffer mark() methods in Java with Examples Last Updated : 27 Jun, 2019 Summarize Comments Improve Suggest changes Share Like Article Like Report The mark() method of java.nio.ByteBuffer Class is used to set this buffer's mark at its position. Syntax: public ByteBuffer mark() Return Value: This method returns this buffer. Below are the examples to illustrate the mark() method: Examples 1: Java // Java program to demonstrate // mark() method import java.nio.*; import java.util.*; public class GFG { public static void main(String[] args) { try { byte[] barr = { 10, 20, 30, 40 }; // creating object of ByteBuffer // and allocating size capacity ByteBuffer bb = ByteBuffer.wrap(barr); // try to set the position at index 2 bb.position(2); // Set this buffer mark position // using mark() method bb.mark(); // try to set the position at index 4 bb.position(4); // display position System.out.println("position before reset: " + bb.position()); // try to call reset() to restore // to the position we marked bb.reset(); // display position System.out.println("position after reset: " + bb.position()); } catch (InvalidMarkException e) { System.out.println("new position is less than " + "the position we marked before "); System.out.println("Exception throws: " + e); } } } Output: position before reset: 4 position after reset: 2 Examples 2: To demonstrate InvalidMarkException Java // Java program to demonstrate // mark() method import java.nio.*; import java.util.*; public class GFG { public static void main(String[] args) { try { byte[] barr = { 10, 20, 30, 40 }; // creating object of ByteBuffer // and allocating size capacity ByteBuffer bb = ByteBuffer.wrap(barr); // try to set the position at index 2 bb.position(2); // Set this buffer mark position // using mark() method bb.mark(); // try to set the position at index 4 bb.position(1); // display position System.out.println("position before reset: " + bb.position()); // try to call reset() to restore // to the position we marked bb.reset(); // display position System.out.println("position after reset: " + bb.position()); } catch (InvalidMarkException e) { System.out.println("\nnew position is less than " + "the position we marked before "); System.out.println("Exception throws: " + e); } } } Output: position before reset: 1 new position is less than the position we marked before Exception throws: java.nio.InvalidMarkException Reference: https://docs.oracle.com/javase/9/docs/api/java/nio/ByteBuffer.html#mark-- Comment More infoAdvertise with us Next Article Buffer mark() methods in Java with Examples R rohitprasad3 Follow Improve Article Tags : Java Java-Functions Java-NIO package Java-ByteBuffer Practice Tags : Java Similar Reads Buffer mark() methods in Java with Examples The mark() method of java.nio.Buffer Class is used to set this buffer's mark at its position.Syntax: public Buffer mark() Return Value: This method returns this buffer.Below are the examples to illustrate the mark() method:Examples 1: Java // Java program to demonstrate // mark() method import java. 2 min read DoubleBuffer mark() methods in Java with Examples The mark() method of java.nio.DoubleBuffer Class is used to mark the current position of this DoubleBuffer as the mark of this buffer. Syntax: public DoubleBuffer mark() Return Value: This method returns this DoubleBuffer after setting the buffer's mark at the current position. Below are the example 2 min read ByteBuffer limit() methods in Java with Examples The limit() method of java.nio.ByteBuffer Class is used to set this buffer's limit. If the position is larger than the new limit then it is set to the new limit. If the mark is defined and larger than the new limit then it is discarded. Syntax: public ByteBuffer limit(int newLimit) Return Value: Thi 2 min read CharBuffer mark() methods in Java with Examples The mark() method of java.nio.CharBuffer Class is used to set this buffer's mark at its position. Syntax: public CharBuffer mark() Return Value: This method returns this buffer. Below are the examples to illustrate the mark() method: Examples 1: Java // Java program to demonstrate // mark() method i 2 min read ByteBuffer flip() methods in Java with Examples The flip() method of java.nio.ByteBuffer Class is used to flip this buffer. The limit is set to the current position and then the position is set to zero. If the mark is defined then it is discarded. After a sequence of channel-read or put operations, invoke this method to prepare for a sequence of 3 min read ByteBuffer wrap() methods in Java with Examples wrap(byte[] array) The wrap() method of java.nio.ByteBuffer Class is used to wraps a byte array into a buffer. The new buffer will be backed by the given byte array, i.e., modifications to the buffer will cause the array to be modified and vice versa. The new buffer's capacity and limit will be arra 4 min read Like