String Scenario Questions

Replace "spring Boot" instead of "Java" in the sentence

public class SpringBoot
{
public static void main(String[] args){
String str = "I love Java Programming";
String text = str.replace("Java","Spring Boot");
System.out.println(text);
}
}

Validate Mobile No(10 digits only)

public class MobileNo
{
public static void main(String[] args){
String mobile = "9360257399";

if(mobile.matches("\\d{10}")){
System.out.println("Valid mobile number");

}
else{
System.out.println("Invalid mobile number");

}
}
}

Split and store into array the given string

import java.util.Arrays;
public class Fruits

{
public static void main(String[] args){
String str = "apple#banana#mango";
String [] fruits = str.split("#");
System.out.println(Arrays.toString(fruits));
}
}