JAVA Write a substring expression to extract “Exam” from the following String.  String str= “Final Exam”;

Assume the followingString s,t,h,a,n,e;int i;h = “Hello”;s = “How are you?”a = “abc”;n = null;e = “”;Give the values of the following expressions, or illegal1. h.length()2. h.substring(1)3. h.toUpperCase()4. h.toUpperCase().toLowerCase()5. h.indexOf("H")6. h.startsWith("ell")7. "Tomorrow".indexOf("o")8. "Tomorrow".indexOf("o", 3)9. "Tomorrow".lastIndexOf('o')10. "a = \"" + a + "\""11. (a.length() + a).startsWith("a")12. a.length() + a.startsWith("a")13. ">>>" + a.length() + a.startsWith("a")14. a.substring(1,3).equals("bc")15. a.substring(1,3) == "bc"16. "a".compareTo("c")17.…

Suppose that you declare two String objects as: String word1 = new String("Computer"); String word2 = new String("Science"); Write an if statement that checks to see if the two strings are equal.

c++ code   Note:-  Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism.Answer completely.You will get up vote for sure.

After a certain point, the usage of an initial block statement becomes invalid.

void caseConvert(string &text, char to_case){ //if to_case is 'u' then convert all letters //of text to uppercase and if to_case is 'I' // then convert all letters of text to //lowercase //write your C++ code here

Language C++

Use C++ (1) Prompt the user to enter a string of their choosing. Store the text in a string. Output the string.Ex: Enter a sample text: We'll continue our quest in space. There will be more shuttle flights and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space. Nothing ends here; our hopes and our journeys continue! You entered: We'll continue our quest in space. There will be more shuttle flights and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space. Nothing ends here; our hopes and our journeys continue! (2) Implement a PrintMenu() function, which has a string as a parameter, outputs a menu of user options for analyzing/editing the string, and returns the user's entered menu option. Each option is represented by a single character. If an invalid character is entered, continue to prompt for a valid choice. Hint: Implement Quit before implementing other options. Call PrintMenu() in the main() function. Continue to…

T/F Assume finished is wrong, int x = 10, int y = 11, String s = "Help," and String t = "Goodbye." Then the statement (!done && x= y) is right.

what are the difference betweenpassing an argument by pass by value and pass by refference?