The program is an illustration of conditional statements.
Conditional statements are statements whose execution is dependent on the truth value of the condition.
The checkCharacter() method in Java, where comments are used to explain each line is as follows:
//This defines the checkCharacter() method
public static String checkCharacter(String inputString, int index){
//This checks if the character at the index, is a digit
if(Character.isDigit(inputString.charAt(index))){
//If yes, it returns "Digit"
return "Character "+inputString.charAt(index)+" is a digit";
}
//This checks if the character at the index, is a letter
else if(Character.isLetter(inputString.charAt(index))){
//If yes, it returns "letter"
return "Character "+inputString.charAt(index)+" is a Letter";
}
//This checks if the character at the index, is a white space
else if(inputString.charAt(index) ==' '){
//If yes, it returns "white space"
return "Character "+inputString.charAt(index)+" is a white space";
}
#If all the above conditions are false
else{
//If yes, it returns "unknown character"
return "Character "+inputString.charAt(index)+" is an unknown character";
}
}
The string to return depends on the character at the index.
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