i am very new in java.can anyone help me to do the following problem:
Write a program to do the following using in-built methods in the string class of java.
1) Find the 5th caracter in the string " RUSTIN BOND"
2) Find the index of character "K" in string "KANSAS".
3) Convert the string "hello world" to uppercase.
4) Replace character 'h' with 'b' in the string"humble".