Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
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Chapter 21, Problem 21.7PE

(Revise Listing 21.9, CountOccurrenceOfWords.java) Rewrite Listing 21.9 to display the words in ascending order of occurrence counts.

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(Convert decimals to fractions)Write a program that prompts the user to enter a decimal number and displays the number in a fraction.Hint: read the decimal number as a string, extract the integer part and fractional part from the string, and use the Rational class in LiveExample 13.13 to obtain a rational number for the decimal number. Use the template athttps://liveexample.pearsoncmg.com/test/Exercise13_19.txt The problem can not use BigInteger //Below is the Rational LiveExample 13.13 that goes with the problem/question; notice "long" instead of "BigInteger" class Rational extends Number implements Comparable<Rational> {  // Data fields for numerator and denominator  private long numerator = 0;  private long denominator = 1;   /** Construct a rational with default properties */  public Rational() {    this(0, 1);  }   /** Construct a rational with specified numerator and denominator */  public Rational(long numerator, long denominator) {    long gcd = gcd(numerator,…
(Intro to Java)     /** * @author * @author * CIS 36A, Assignment 17.1 */import java.util.Scanner;public class Newsletter {    /**     * Removes all blank spaces in front of     * and at the end of a String     * Hint: use two while loops - one for     * the front of the String, and one     * for the end of the String.     * Use substring to remove the blank space      * from the String     * @param email the email address     * @return an email with no blank spaces     * at the front or end of the String     */    public static String cutSpace(String email) {         //write one while loop here                 //write the second while loop here                 return email;    }       /**     * Searches a String for an @ character     * @param email the String to search     * @return whether the String contains an '@'     */    public static boolean hasAt(String email) {         //write a for loop here to iterate through the String email         return false;    }       /**     * Uses…
(NumberFormatException)Write the bin2Dec(String binaryString) method to convert a binary string into a decimal number. Implement the bin2Dec method to throw a NumberFormatException if the string is not a binary string. Write a test program that prompts the user to enter a binary number as a string and displays decimal equivalent of the string. If the method throws an exception, display "Not a binary number".Sample Run 1Enter a binary number: 1015Sample Run 2Enter a binary number: 41Not a binary number: 41

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