Java String Exercises: Check whether the first instance of 'z' is immediately followed by another 'z' in a given string
Java String: Exercise-98 with Solution
Write a Java program to check whether the first instance of 'z' is immediately followed by another 'z' in a given string.
Sample Solution:
Java Code:
import java.util.*;
public class Main
{
boolean appearTwice(String stng)
{
int i = stng.indexOf("z");
if (i == -1) return false;
if (i+1 >= stng.length()) return false;
return stng.substring(i+1, i+2).equals("z");
}
public static void main (String[] args)
{
Main m= new Main();
String str1 = "fizzez";
System.out.println("The given string is: "+str1);
System.out.println("Is 'z' appear twice respectively? "+m.appearTwice(str1));
}
}
Sample Output:
The given string is: fizzez Is 'z' appear twice respectively? true
Pictorial Presentation:
Flowchart:

Java Code Editor:
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Next: Write a Java program to return a new string using every characters of even positions from a given string.
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