The String class is provided in the Java library.Provide your own implementation for the following methods (name the newclass MyString2):public MyString2(String s);public int compare(String s);public MyString2 substring(int begin);public MyString2 toUpperCase();public char[] toChars();public static MyString2 valueOf(boolean b);

TASK 3 The String class is provided in the Java library. Provide your own Java implementation for the following methods (name the new class MyString): public Mystring(char [] chars); public char charat (int index); int length(); public Mystring substring(int begin, int end); public Mystring toLowercase); public boolean equals (Mystring s); public static Mystring valueof (int i); public int compare(string s); public Mystring substring(int begin); public Mystring toupperCase(); Write a Java test program that tests all methods in the class.

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,…

The StringBuilder class is providedin the Java library. Provide your own implementation for the following methods(name the new class MyStringBuilder2):public MyStringBuilder2();public MyStringBuilder2(char[] chars);public MyStringBuilder2(String s);public MyStringBuilder2 insert(int offset, MyStringBuilder2 s);public MyStringBuilder2 reverse();public MyStringBuilder2 substring(int begin);public MyStringBuilder2 toUpperCase();

Convert uml to java code with main method

What does the following code print out? public class MysteryNumbers static void Main(string[] args) { String one = "two"; String two String three = "1"; int number = 20; = "three"; Sentence (one, two, 3); Sentence (two, three, 14); Sentence (three, "three", number + 1); Sentence (three, two, 1); Sentence ("eight", three, number / 2); } public static void Sentence (String three, String one, int number) System.out.println (three + times + one + = " + (number * 2)); }

preLabC.java 1 import java.util.Random; 2 import java.util.StringJoiner; 3 4- public class preLabC { 5 6- 7 8 9 10 11 12 13 14 15 16 17 18 19 20 } public static String myMethod(MathVector inputVector) { String vectorStringValue = new String(); // empty String object System.out.println("here is the contents object, inputVector: + inputVector); // get a String out of that MathVector object. Do it here. On the next line. // return the double value here. return vectorStringValue; "1 ▸ Compilation Description A MathVector object will be passed to your method. Return its contents as a String. If you look in the file MathVector.java you'll see there is a way to output the contents of a MathVector object as a String. This makes it useful for displaying to the user. /** * Returns a String representation of this vector. The String should be in the format "[1, 2, 3]" * * @return a String representation of this vector * @apiNote **DO NOT** use the built-in (@code Arrays.toString()} method. */…

Consider the following piece of code. (The numbers on the left margin denote line numbers.) line#01 public class funcRef {02     private int n;03     public funcRef (int m) {n = m;}04     public static void func (funcRef t) {t.n++;}05     public static void main (String [] args) {06         funcRef t1, t2;07         t1 = new funcRef(20);08         t2 = t1;09         System.out.print(t2.n);10         func(t1);11         System.out.print(t2.n);12         func(t1);13         System.out.print(t1.n);14         func(t2);15         System.out.print(t1.n);16         func(t2);17         System.out.print(t1.n);18         System.out.print(t1.n);19         return;20     }21 } Out of the following, tick the true statements and leave the false statements unticked.(More than one of the statements could be true. You get full marks only for marking all the statements correctly. There are no partial marks.) A. The output of the program will be 202022222222. B. When func(t1) is called in line…

Solve all the errors in the below method of C# language step by step and comment the error by correcting it. internal static void ReverseWordOrder(string str) { int i StringBuilder reverseSentence = new StringBuilder(); int Start = str.Length ; int End = str.Length - 1; while (Start > 0) { if (str[Start] == ' ') { i = Start  while (i <= ) { reverseSentence.Append(str[i]); i++; } reverseSentence.(' '); End = Start - 1; } Start-; } for (i = 0; i <= End; i++) { reverseSentence.Append(str[i]); } Console.WriteLine(reverseSentence.ToString());

Write a method that prints:   5 4 3 2 1 4 3 2 1 3 2 1 2 1 1     class Main {public static void main(String[] args) {}}