How to Get First and Last word from String using Java

/* java program to get first and last word of a string */

class wordDisplay{
public static void main(String args[]){

String str = "Object Oriented Protramming" ;

//get first word
int firstSpacePosition = str.indexOf(" ");

String firstWord = str.substring(0,firstSpacePosition); // Object

//get last word

String lastWord = str.substring(str.lastIndexOf(" ")+1); //Programming

//print
System.out.println("first word : "+firstWord);
System.out.println("Last word: "+lastWord);
}
}

java program to get first and last character of a string

/* java program to get first and last character of a string */

 class PositionDemo{
public static void main(String args[]){

String str = "123456789" ;

//get First character
char first = str.charAt(0);

//get Last character
char last = str.charAt(str.length()-1);  //get last character

System.out.println("First charcater : "+first);
System.out.println("Last charcter :"+last);

}
 }