can any one please edit these two codes am getting errors: can any one please ed
ID: 3866291 • Letter: C
Question
can any one please edit these two codes am getting errors:
can any one please edit this code :
1(a)Define a class of bags that implements the interface BagInterface. Use an
instance of the class ArrayList to contain a bag’s entries. Then write a program that adequately demonstrates
your new class. Note that you might have to handle exceptions thrown by methods of ArrayList.
(b). Repeat (a), but instead define a class of stacks that implements the interface StackInterface
code for 1(a):
import java.util.ArrayList;
public class Baglnterface implements Baglnterface
{
@SuppressWarnings("rawtypes")
private ArrayList Bag;
private static nal int DEFAULT_CAPACITY = 25;
public void ArrayListbag()
{
this(DEFAULT_CAPACITY);
}
public Baglnterface(int capacity)
{
bag = new ArrayList(capacity);
}
public boolean add(T newEntry)
{
retrun bag.add(T newEntry)
}
public int getCurrentSize()
{
return bag.size()
}
public boolean isEmpty()
{
return bag.isEmpty();
}
public boolean isFu||()
{
return false;
}
public T remove()
{
T result = null;
if(!bag.isEmpty()) TUTO
result = (T)bag.remove(bag.size() - 1);
return result;
}
public boolean remove(T anEntry)
{
boolean result = bag.remove(anEntry);
return result;
}
public void clear()
{
bag.c|ear();
}
public int getFrequencyOfCl' anEntry)
{
int counter = 0;
for (int index = 0; index < bag.size(); index++)
{
Tl
if (anEntry.equals(bag.get(index)))
counter++;
}
return counter;
}
public boolean contains(T anEntry)
{
return bag.contains(anEntry);
}
public T[] toArray()
{
return (T[])bag.toAITay();
}
public static void main(Stn'ng[] args)
{
ArrayListBag aBag = new ArrayListBagO;
aBag.add("C"); aBag.add("C++");
aBag.add("Java"); aBag.add("PHP");
aBag.add("Java"); aBag.add("Java");
System.out.println("Bag size: "+aBag.getCurrentSize());
Object entriesl] = aBag.toArray();
for(int i=0;i
System.out.print|n(entnes[i]);
System.out.println("Stnng 'Java' occurs " +
aBag.getFrequency0f("Java")+" times");
System.out.println("Pascal is present in bag is
+aBag.oontains("Pascal"));
aBag.remove();
aBag.remove("PHP");
System.out.println("...After remove is called...");
entries = aBag.toArray();
for(int i=0;i
System.out.println(entr1es[i]);
System.out.println("....Call the clear method....");
aBag.c|ear();
System.out.println("The bag is empty is " +aBag.isEmpty()) ;
}
Code for 1b:
public interface Stacklnterface {
}
import java.util.ArrayList;
public class ArrayListStack implements Stacklnterface
{
private ArrayList stack;
private static nal int DEFAULT_CAPACITY = 25;
Creates an empty bag whose initial capacity is 25.
"Denition of oonstruootr
public ArrayListStackO
{
this(DEFAULT_CAPACITY);
}
public ArrayListStack(int capacity)
{
stack = new ArrayList(capacity);
}l/public ArrayListStack() {
// TODO Auto-generated constructor stub
}
End constructor
Adds a new entry to the top of this stack.
/lMethod denition
public void push(T newEntry)
{
/lUse add method od ArrayList ciass to
/lpush entries into the stack
stack.add(newEntry);
}l/End method
public T pop()
{
T result = null;
if(!stack.isEmpty())
result = (T)stack.remove(stack.size()—1);
return result;
}
public T peek()
{
T result = null;
if(!stack.isEmpty())
result=(T)stack.get(stack.size()-1;
return result;
}
public boolean isEmpty()
{
return stack isEmpty();
}
public void clear()
{
stack.clear();
}
public String toString(
{
String result="";
fpr(int i=0;i
result+=stack.get(i)+"";
return result;
}
int size()
{
return stack.size();
}
}
public class test
{
public static void main(String[] args)
{
ArrayListStack aStack=new
ArrayListStack();
aStack.push("C");
aStack.push("C++");
aStack.push("JAVA");
aStack.push("PHP");
aStack.push("JAVA");
aStack.push("JAVA");
System.out.println("Stack size:"+aStack.size());
System.out.println(aStack);
aStack.pop();
aStack.pop();
System.out.println(aStack);
System.out.println(aStack.peek());
aStack.clear();
System.out.println("The bag is empty is "+ aStack.isEmpty());
}
}
}
}
Explanation / Answer
I have fixed the code. I presume you have the code for BagInterface and StackInterface. The fixed code is given below. Please do rate the answer if it helped. Thank you.
ArrayListBag.java
import java.util.ArrayList;
public class ArrayListBag<T> implements Baglnterface<T> {
private ArrayList<T> bag;
private final static int DEFAULT_CAPACITY = 25;
public ArrayListBag() {
this(DEFAULT_CAPACITY);
}
public ArrayListBag(int capacity) {
bag = new ArrayList<T>(capacity);
}
public boolean add(T newEntry)
{
bag.add(newEntry);
return true;
}
public int getCurrentSize()
{
return bag.size();
}
public boolean isEmpty() {
return bag.isEmpty();
}
public boolean isFull()
{
return false;
}
public T remove()
{
T result = null;
if(!bag.isEmpty())
result = (T)bag.remove(bag.size() - 1);
return result;
}
public boolean remove(T anEntry) {
boolean result = bag.remove(anEntry);
return result;
}
public void clear()
{
bag.clear();
}
public int getFrequencyOf(T anEntry)
{
int counter = 0;
for (int index = 0; index < bag.size(); index++)
{
if (anEntry.equals(bag.get(index)))
counter++;
}
return counter;
}
public boolean contains(T anEntry) {
return bag.contains(anEntry);
}
public T[] toArray()
{
return (T[]) bag.toArray();
}
public static void main(String[] args)
{
ArrayListBag<String> aBag = new ArrayListBag<String>();
aBag.add("C"); aBag.add("C++");
aBag.add("Java"); aBag.add("PHP");
aBag.add("Java"); aBag.add("Java");
System.out.println("Bag size: "+aBag.getCurrentSize());
Object[] entries = aBag.toArray();
for(int i = 0; i <entries.length; i++)
System.out.println(entries[i]);
System.out.println("String 'Java' occurs " +
aBag.getFrequencyOf("Java") + " times");
System.out.println("Pascal is present in bag is " + aBag.contains("Pascal"));
aBag.remove();
aBag.remove("PHP");
System.out.println("...After remove is called...");
entries = aBag.toArray();
for(int i = 0; i <entries.length; i++)
System.out.println(entries[i]);
System.out.println("....Call the clear method....");
aBag.clear();
System.out.println("The bag is empty is " + aBag.isEmpty()) ;
}
}
output
Bag size: 6
C
C++
Java
PHP
Java
Java
String 'Java' occurs 3 times
Pascal is present in bag is false
...After remove is called...
C
C++
Java
Java
....Call the clear method....
The bag is empty is true
ArrayListStack.java
import java.util.ArrayList;
public class ArrayListStack<T> implements Stacklnterface<T> {
private ArrayList<T> stack;
//Creates an empty bag whose initial capacity is 25
public ArrayListStack()
{
stack = new ArrayList<T>();
}
public ArrayListStack(int capacity) {
stack = new ArrayList<T>(capacity);
}
//Adds a new entry to the top of this stack.
public void push(T newEntry)
{
stack.add(newEntry);
}
public T pop()
{
if(!isEmpty())
return stack.remove(stack.size() - 1);
else
return null;
}
public T peek()
{
if(!stack.isEmpty())
return stack.get(stack.size()-1);
else
return null;
}
public boolean isEmpty()
{
return stack.isEmpty();
}
public void clear() {
stack.clear();
}
public String toString()
{
String result="";
for(int i=0; i < stack.size(); i++)
result += stack.get(i) + " ";
return result;
}
int size() {
return stack.size();
}
}
TestStack.java
public class TestStack
{
public static void main(String[] args)
{
ArrayListStack<String> aStack=new ArrayListStack<String>();
aStack.push("C");
aStack.push("C++");
aStack.push("JAVA");
aStack.push("PHP");
aStack.push("JAVA");
aStack.push("JAVA");
System.out.println("Stack size:"+aStack.size());
System.out.println(aStack);
aStack.pop();
aStack.pop();
System.out.println(aStack);
System.out.println(aStack.peek());
aStack.clear();
System.out.println("The bag is empty is "+ aStack.isEmpty());
}
}
output
Stack size:6
C
C++
JAVA
PHP
JAVA
JAVA
C
C++
JAVA
PHP
PHP
The bag is empty is true
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