isEmpty()

public boolean isEmpty()
Returns true if, and only if, length() is 0.

class StringIsEmpty{
 public static void main(String args[]){
  String s1 = "";
  String s2 = " ";
  
  System.out.println("Is s1 empty " + s1.isEmpty());
  System.out.println("Is s2 empty " + s2.isEmpty());
 }
}

Output

Is s1 empty true
Is s2 empty false

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