The join() method of Longs Class in the Guava library is used to combine or join all the given long values separated by a separator. These long 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 long values.
For example: join(“-“, 1L, 2L, 3L) returns the string “1-2-3”.
Syntax:
public static String join(String separator, long… array)
Parameters: This method accepts two mandatory parameters:
- separator: which is the character that occurs in between the joined long values.
- array: which is an array of long values that are to be joined.
Return Value: This method returns a string containing all the given long values separated by separator.
Below programs illustrate the use of this method:
Example 1:
// Java code to show implementation of// Guava's Longs.join() method import com.google.common.primitives.Longs;import java.util.Arrays; class GFG { // Driver's code public static void main(String[] args) { // Creating a long array long[] arr = { 2, 4, 6, 8, 10 }; // Using Longs.join() method to get a // string containing the elements of array // separated by a separator System.out.println(Longs.join("#", arr)); }} |
Output:
2#4#6#8#10
Example 2:
// Java code to show implementation of// Guava's Longs.join() method import com.google.common.primitives.Longs;import java.util.Arrays; class GFG { // Driver's code public static void main(String[] args) { // Creating a long array long[] arr = { 3, 5, 7, 9, 11 }; // Using Longs.join() method to get a // string containing the elements of array // separated by a separator System.out.println(Longs.join("*", arr)); }} |
Output:
3*5*7*9*11
