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