Java programming - Use some of the String methods' charAt(). length(), replace(), substring,
String name ="Shin Liu";
String river ="Mississippi";
// 1. find how many characters of your name
int numChar = name.length() -1;
System.out.println("My name has " + numChar + " characters");
// 2. display first name initial - must return a character
//char firstInitial = name.charAt(0);
System.out.println("My first Name initial is " + name.charAt(0));
// 3. display last name initial
System.out.println("My last Name initial is " + name.charAt(5));
// 4. replace first name to any other first name
String newName = name.replace("Shin", "Professor");
System.out.println("The new name is " + newName);
// 5. display first name
System.out.println("My first name is " + name.substring(0, 5));
// 6. display last name
System.out.println("My last name is " + name.substring(5));
// 7. find how many characters of the river
System.out.println("There are " + river.length() + " character");
//8. use a string method to convert river to upper case
System.out.println("The upper case of the river is " + river.toUpperCase());
//9. use a string method to change Mississippi to Missouri
System.out.println("The river is renamed to " + river.replace("ssipp", "ouri"));