The join() method of Doubles Class in the Guava library is used to combine or join all the given double values separated by a separator. These double values are passed a parameter to this method. This method also takes the separator as the parameter. This method returns a String which is the result of join operation on the specified double values.
For example: join(“-“, 1L, 2L, 3L) returns the string “1-2-3”.
Syntax:
public static String join(String separator, double… array)
Parameters: This method accepts two mandatory parameters:
- separator: which is the doubleacter that occurs in between the joined double values.
- array: which is an array of double values that are to be joined.
Return Value: This method returns a string containing all the given double values separated by separator.
Below programs illustrate the use of this method:
Example 1:
// Java code to show implementation of // Guava's Doubles.join() method import com.google.common.primitives.Doubles;
import java.util.Arrays;
class GFG {
// Driver's code
public static void main(String[] args)
{
// Creating a double array
double [] arr = { 2.3 , 4.2 , 6.2 , 8.6 , 10.5 };
// Using Doubles.join() method to get a
// string containing the elements of array
// separated by a separator
System.out.println(Doubles.join( "#" , arr));
}
} |
2.3#4.2#6.2#8.6#10.5
Example 2:
// Java code to show implementation of // Guava's Doubles.join() method import com.google.common.primitives.Doubles;
import java.util.Arrays;
class GFG {
// Driver's code
public static void main(String[] args)
{
// Creating a double array
double [] arr = { 3.2 , 5.4 , 7.6 , 9.1 , 11.2 };
// Using Doubles.join() method to get a
// string containing the elements of array
// separated by a separator
System.out.println(Doubles.join( "*" , arr));
}
} |
3.2*5.4*7.6*9.1*11.199999809265137