Write a Java program which reads a string from the user and calls a method findVowels() from the main() method which passes the string as argument and prints the number of occurrences of each vowel (i.e., a, e, i, o, and u) present in that string. Read the string from the user using the Scanner class. Sample input: The quick brown fox jumps over the lazy dog Sample output:

Write the following programs in Java: In the Converter class write the static method, bin2decimal(String bin). The parameter for this method is an unsigned (nonnegative) binary number represented by a string. The method returns the decimal equivalent for the binary parameter, as an integer.If the binary string is invalid (contains characters other than ‘0’ and ‘1’), the method returns -1. Convert from a binary (b) string with up to 16 digits to decimal (d) using the following formula:? = ?0 + ?1 × 2 + ?2 × 22 +⋯+ ?7 × 215where b0, b1, ?2, … ?7 are the binary digits in order of increasing significance. For example, 1101 is: 1 + 0×2 + 1×22 + 1×23 = 13 in decimal. Side note: You may NOT use the decode method of the Long wrapper class instead of this formula.   In the Converter class write another static method, english2encrypted(String english). The parameter for this method is a word or sentence represented by a string. The word or sentence should only contain letters (no digits,…

Add a static method, public static void changeLetter (StringBuilder sb, char letter) Convert all occurrences of the letter variable in the StringBuilder to upper case. Write in java and use test case example as reference.

Write a Java program correctly that generates a report of proof of vaccination against COVID-19 for the peoplewho received their dose of vaccination. Write a program which:1. Display a welcome message.2. Then prompts the user to enter the following:• First name, with first letter uppercase, which is then stores in a variable of type String.• Last name, with first letter uppercase which is then stores in a variable of type String.• Day of birth, set as a number between 1 and 31, which is then stores in a variable of typeint.• Month of birth, set as a number between 1 and 12, which is then stores in a variable of typeint.• Year of birth, set as a number between 1920 and 2006, which is then stores in a variable oftype int.• Day of vaccination, set as a number between 1 and 31, which is then stores in a variable oftype int.• Month of vaccination. set as a number between 1 and 12, which is then stores in a variableof type int.• Year of vaccination, set as a number between 2020 and 2021,…