Inflater setInput() function in Java with examples
Last Updated :
24 Jun, 2019
The setInput() function of the Inflater class is used to set input data for uncompression. This function should be called when needsInput() returns true indicating input buffer is empty.
Function Signature:
public void setInput(byte[] b)
public void setInput(byte[] b, int offset, int len)
Syntax:
i.setInput(byte[]);
i.setInput(byte[], int, int);
Parameter: The various parameters accepted by these overloaded functions are:
- byte[] b: This is the input array that is to be inflated
- int offset: This is the starting offset from which the values are to be read in the given array
- int length: This is the maximum length to be compressed from the starting offset.
Return Type: The function has no return value
Exception: The function does not throw any exception
Example 1: use of setInput(byte[] b) function
import java.util.zip.*;
import java.io.UnsupportedEncodingException;
class GFG {
public static void main(String args[])
throws UnsupportedEncodingException,
DataFormatException
{
Deflater d = new Deflater();
String pattern = "GeeksforGeeks" , text = "" ;
for ( int i = 0 ; i < 4 ; i++)
text += pattern;
d.setInput(text.getBytes( "UTF-8" ));
d.finish();
byte output[] = new byte [ 1024 ];
int size = d.deflate(output);
d.end();
Inflater i = new Inflater();
i.setInput(output);
byte inflater_output[] = new byte [ 1024 ];
int org_size = i.inflate(inflater_output);
System.out.println( "Compressed output of deflater : "
+ new String(output));
System.out.println( "Compressed output of Inflater : "
+ new String(inflater_output, "UTF-8" ));
i.end();
}
}
|
Output:
Example 2: use of setInput(byte[] b, int offset, int len) function
import java.util.zip.*;
import java.io.UnsupportedEncodingException;
class GFG {
public static void main(String args[])
throws UnsupportedEncodingException,
DataFormatException
{
Deflater d = new Deflater();
String pattern = "GeeksforGeeks" , text = "" ;
for ( int i = 0 ; i < 4 ; i++)
text += pattern;
d.setInput(text.getBytes( "UTF-8" ));
d.finish();
byte output[] = new byte [ 1024 ];
int size = d.deflate(output);
d.end();
Inflater i = new Inflater();
i.setInput(output, 0 , 14 );
byte inflater_output[] = new byte [ 1024 ];
int org_size = i.inflate(inflater_output);
System.out.println( "Compressed output of deflater : "
+ new String(output));
System.out.println( "Compressed output of Inflater : "
+ new String(inflater_output, "UTF-8" ));
i.end();
}
}
|
Output:
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/zip/Inflater.html#setInput()
Like Article
Suggest improvement
Share your thoughts in the comments
Please Login to comment...