Java Guava | Booleans.join() method with Examples
Last Updated :
30 Jan, 2019
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 :
import com.google.common.primitives.Booleans;
import java.util.Arrays;
class GFG {
public static void main(String[] args)
{
boolean [] arr = { true , false , true ,
false , true };
System.out.println(Booleans.join( "#" , arr));
}
}
|
Output:
true#false#true#false#true
Example 2 :
import com.google.common.primitives.Booleans;
import java.util.Arrays;
class GFG {
public static void main(String[] args)
{
boolean [] arr = { false , false ,
true , false };
System.out.println(Booleans.join( "*" , arr));
}
}
|
Output:
false*false*true*false
Reference: https://google.github.io/guava/releases/20.0/api/docs/com/google/common/primitives/Booleans.html#join-java.lang.String-boolean…-
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