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 21.5, Problem 21.5.3CP
Program Plan Intro

Program:

//import the util package

import java.util.*;

//class Definition

public class Test {

// main method

public static void main(String[] args) {

//declare a LinkedHashMap

Map<Integer, String> map = new LinkedHashMap<>();

//insert keys and values into the map

map.put("123", "John Smith");

map.put("111", "George Smith");

map.put("123", "Steve Yao");

map.put("222", "Steve Yao");

//print elements present in the map

System.out.println("(1) " + map);

/*print elements in a new Treemap which implements map */

System.out.println("(2) " + new TreeMap<, String>(map));

//check if key equals 123 then print the value

map.forEach((k, v) -> {

if (k.equals("123"))

System.out.println(v);});

}

}

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Question 2. package sortsearchassigncodeex1; import java.util.Scanner; import java.io.*; // // public class Sortsearchassigncodeex1 {       //         public static void fillArray(Scanner inputFile, int[] arrIn){     int indx = 0; //Complete code                     {         arrIn[indx] = inputFile.nextInt();       indx++;       }   }
public class Polygon { private double sideLength; private int sides; private String shape; public double getArea () { int n sides; double a sideLength; return ((a * a * n) / (4 * Math.tan((180 / n) 3.14159 / 180))); public void setPolygon (double sl, int sd, String sh) { sides-sd; sideLength-sl; shape=sh; public Polygon (double sl, int sd, String sh) ( sides-sd; sideLengthsl; shape=sh; public String getShape () { return (shape); } public int getSides () { return (sides); } public double getLength () { return (sideLength); } Write a static method named find that takes as a parameter an array of type Polygon named list. The method should print the shapes of each polygon that has an area greater than 500 and return their count. The method prototype is public static int find (Polygon [] list); Note: assume the array is already declared, populated with data in the main method and ready to be used.
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