The equals() method of java.nio.DoubleBuffer Class is used to check whether or not the given buffer is equal to another object.
Two double buffers are equal if, and only if,
- They have the same element type,
- They have the same number of remaining elements, and
- The two sequences of remaining elements, considered independently of their starting positions, are pointwise
equal.
This method considers two double elements a and b to be equal if (a == b) || (Double.isNaN(a) && Double.isNaN(b)). The values -0.0 and +0.0 are considered to be equal, unlike Double.equals(Object).
A double buffer is not equal to any other type of object.
Syntax:
public boolean equals(Object ob)
Parameters: This method takes the ob, the object to which this buffer is to be compared, as a parameter.
Return Value: This method returns true if, and only if, this buffer is equal to the given object.
Below are the examples to illustrate the equals() method:
Example 1:
// Java program to demonstrate // equals() method import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the DoubleBuffer 1
int capacity1 = 10 ;
// Declaring the capacity of the DoubleBuffer 2
int capacity2 = 10 ;
// Creating the DoubleBuffer
try {
// creating object of Doublebuffer 1
// and allocating size capacity
DoubleBuffer db1 = DoubleBuffer.allocate(capacity1);
// creating object of Doublebuffer 2
// and allocating size capacity
DoubleBuffer db2 = DoubleBuffer.allocate(capacity2);
// putting the value in Doublebuffer 1
db1.put( 8 .56F);
db1.put( 2 , 9 .61F);
db1.rewind();
// putting the value in Doublebuffer 2
db2.put( 8 .56F);
db2.put( 2 , 9 .61F);
db2.rewind();
// print the DoubleBuffer 1
System.out.println( " DoubleBuffer 1: "
+ Arrays.toString(db1.array()));
// print the DoubleBuffer 2
System.out.println( " DoubleBuffer 2: "
+ Arrays.toString(db2.array()));
// checking the equality of both DoubleBuffer
boolean dbb = db1.equals(db2);
// checking if else condition
if (dbb)
System.out.println( "both are equal" );
else
System.out.println( "both are not equal" );
}
catch (IllegalArgumentException e) {
System.out.println( "IllegalArgumentException catched" );
}
catch (ReadOnlyBufferException e) {
System.out.println( "ReadOnlyBufferException catched" );
}
}
} |
DoubleBuffer 1: [8.5600004196167, 0.0, 9.609999656677246, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] DoubleBuffer 2: [8.5600004196167, 0.0, 9.609999656677246, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] both are equal
Example 1:
// Java program to demonstrate // equals() method import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the DoubleBuffer 1
int capacity1 = 10 ;
// Declaring the capacity of the DoubleBuffer 2
int capacity2 = 5 ;
// Creating the DoubleBuffer
try {
// creating object of Doublebuffer 1
// and allocating size capacity
DoubleBuffer db1 = DoubleBuffer.allocate(capacity1);
// creating object of Doublebuffer 2
// and allocating size capacity
DoubleBuffer db2 = DoubleBuffer.allocate(capacity2);
// putting the value in Doublebuffer 1
db1.put( 8 .56F);
db1.put( 2 , 9 .61F);
db1.rewind();
// putting the value in Doublebuffer 2
db2.put( 8 .56F);
db2.put( 2 , 9 .61F);
db2.rewind();
// print the DoubleBuffer 1
System.out.println( " DoubleBuffer 1: "
+ Arrays.toString(db1.array()));
// print the DoubleBuffer 2
System.out.println( " DoubleBuffer 2: "
+ Arrays.toString(db2.array()));
// checking the equality of both DoubleBuffer
boolean dbb = db1.equals(db2);
// checking if else condition
if (dbb)
System.out.println( "both are equal" );
else
System.out.println( "both are not equal" );
}
catch (IllegalArgumentException e) {
System.out.println( "IllegalArgumentException catched" );
}
catch (ReadOnlyBufferException e) {
System.out.println( "ReadOnlyBufferException catched" );
}
}
} |
DoubleBuffer 1: [8.5600004196167, 0.0, 9.609999656677246, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] DoubleBuffer 2: [8.5600004196167, 0.0, 9.609999656677246, 0.0, 0.0] both are not equal