Below is Node.java and ProgramNode.java. There is an error in ProgramNode.java, so make sure to fix that error and show the fixed code with the screenshot of the working code. Node.javaimport java.util.HashMap;import java.util.Map;import java.util.Properties; public abstract class Node { private String type; private Map<String, String> properties = new HashMap<>(); public Node(String type) { this.type = type; } public String getType() { return type; } public void addProperty(String key, String value) { properties.put(key, value); } public String getProperty(String key) { return properties.get(key); } public String ToString() {return null;}} ProgramNode.javaimport javax.swing.ActionMap; public class ProgramNode extends Node { private String programName; private int programId; public ProgramNode(String programName, int programId) { this.programName = programName; this.programId = programId; } @Override public String ToString() { return "ProgramNode{" + "programName='" + programName + '\'' + ", programId=" + programId + '}'; } } 3 import javax.swing.ActionMap;450 /**This set of method will allow the user to declare a private member variable to store the program's name6 *as a String7*/8 public class ProgramNode extends Node {9private String programName;101101213141516017181920212292302425262728029303132330343536373839/**This set of method will allow the user to declare a private member variable to store the program's ID*as an int*/private int programId;/**This set of method will allow the user to create a constructor for ProgramNode that takes a programName*(String) and programId (int) as parameters and initialize the programName and program ID member variable*with the provided value* @param programName* @param programId*/public ProgramNode(String programName, int programId) {}this.programNamthis.programId> Implicit super constructor Node() is undefined. Must explicitly invoke another constructor/**This set of method will allow the user to override the toString() method to provide a custom string*representation of ProgramNode and return a string containing the programName and programId for debugging*and display purposes*/}@Overridepublic String ToString() {return "ProgramNode{" +"programName="" + programName +", programId=" + programId +'}';

When designing object-oriented software, it's paramount to ensure that class hierarchies function…

Answered: Node.java import java.util.HashMap;…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Related questions

Question

Below is Node.java and ProgramNode.java. There is an error in ProgramNode.java, so make sure to fix that error and show the fixed code with the screenshot of the working code.

Node.java

import java.util.HashMap;

import java.util.Map;

import java.util.Properties;

public abstract class Node {

private String type;

private Map<String, String> properties = new HashMap<>();

public Node(String type) {

this.type = type;

}

public String getType() {

return type;

}

public void addProperty(String key, String value) {

properties.put(key, value);

}

public String getProperty(String key) {

return properties.get(key);

}

public String ToString() {

return null;

}

ProgramNode.java

import javax.swing.ActionMap;

public class ProgramNode extends Node {

private String programName;

private int programId;

public ProgramNode(String programName, int programId) {

this.programName = programName;

this.programId = programId;

}

@Override

public String ToString() {

return "ProgramNode{" +

"programName='" + programName + '\'' +

", programId=" + programId +

'}';

}

3 import javax.swing.ActionMap;
4
50 /**This set of method will allow the user to declare a private member variable to store the program's name
6 *as a String
7
*/
8 public class ProgramNode extends Node {
9
private String programName;
10
110
12
13
14
15
160
17
18
19
20
21
22
9230
24
25
26
27
280
29
30
31
32
330
34
35
36
37
38
39
/**This set of method will allow the user to declare a private member variable to store the program's ID
*as an int
*/
private int programId;
/**This set of method will allow the user to create a constructor for ProgramNode that takes a programName
*(String) and programId (int) as parameters and initialize the programName and program ID member variable
*with the provided value
* @param programName
* @param programId
*/
public ProgramNode(String programName, int programId) {
}
this.programNam
this.programId
> Implicit super constructor Node() is undefined. Must explicitly invoke another constructor
/**This set of method will allow the user to override the toString() method to provide a custom string
*representation of ProgramNode and return a string containing the programName and programId for debugging
*and display purposes
*/
}
@Override
public String ToString() {
return "ProgramNode{" +
"programName="" + programName +
", programId=" + programId +
'}';

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Follow-up Questions

Read through expert solutions to related follow-up questions below.

Follow-up Question

There is an error for type in ProgramNode.java. Please fix the error and show the fixed code for ProgramNode.java with the screenshot of the working code.

Solution

by Bartleby Expert

SEE SOLUTION

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions