ByteArrayInputStream mark() method in Java with Examples
The mark() method is a built-in method of the Java.io.ByteArrayInputStream marks the current position of the input stream. It sets readlimit i.e. maximum number of bytes that can be read before mark position becomes invalid.
Syntax:
public void mark(int arg)
Parameters: The function accepts a single mandatory parameter arg which specifies the maximum limit of bytes that can be read before the mark position becomes invalid.
Return Value: The function returns nothing.
Below is the implementation of the above function:
Program 1:
import java.io.*;
public class Main {
public static void main(String[] args) throws Exception
{
byte [] buf = { 5 , 6 , 7 , 8 , 9 };
ByteArrayInputStream exam
= new ByteArrayInputStream(buf);
System.out.println(exam.read());
System.out.println(exam.read());
System.out.println(exam.read());
System.out.println( "Mark() invocation" );
exam.mark( 0 );
System.out.println(exam.read());
System.out.println(exam.read());
}
}
|
Output:
5
6
7
Mark() invocation
8
9
Program 2:
import java.io.*;
public class Main {
public static void main(String[] args) throws Exception
{
byte [] buf = { 1 , 2 , 3 };
ByteArrayInputStream exam
= new ByteArrayInputStream(buf);
System.out.println(exam.read());
System.out.println( "Mark() invocation" );
exam.mark( 3 );
System.out.println(exam.read());
System.out.println(exam.read());
}
}
|
Output:
1
Mark() invocation
2
3
Reference: https://docs.oracle.com/javase/10/docs/api/java/io/ByteArrayInputStream.html#mark(int)
Last Updated :
31 Oct, 2019
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