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)); }} |
Output:
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)); }} |
Output:
3.2*5.4*7.6*9.1*11.199999809265137
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