94 lines
4.3 KiB
HTML
94 lines
4.3 KiB
HTML
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<title>GenericStack.java</title>
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<table width="100%"><tr><td align="center">/home/caleb/ASDV-Java/Semester 3/Assignments/lab6_generics_CalebFontenot/src/main/java/edu/slcc/asdv/caleb/lab6_generics_calebfontenot/GenericStack.java</td></tr></table>
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<pre>
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<span class="comment">/*</span>
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<span class="comment"> * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license</span>
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<span class="comment"> */</span>
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<span class="literal">package</span> edu.slcc.asdv.caleb.lab6_generics_calebfontenot;
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<span class="literal">import</span> java.util.ArrayList;
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<span class="literal">import</span> java.util.EmptyStackException;
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<span class="comment">/**</span>
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<span class="comment"> *</span>
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<span class="comment"> * </span><span class="comment">@author</span> <span class="comment">caleb</span>
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<span class="comment">*/</span>
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<span class="literal">public</span> <span class="literal">class</span> GenericStack<T> {
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<span class="literal">private</span> T[] elements;
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ArrayList<T> elementsList = <span class="literal">new</span> ArrayList<T>();
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<span class="literal">private</span> <span class="literal">int</span> top;
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<span class="literal">static</span> <span class="literal">int</span> size = <span class="number">4</span>;
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<span class="literal">public</span> GenericStack(<span class="literal">int</span> size) {
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elements = (T[]) <span class="literal">new</span> Object[size];
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}
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<span class="literal">public</span> GenericStack()
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{
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elements = (T[]) <span class="literal">new</span> Object[size];
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}
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<span class="literal">public</span> <span class="literal">boolean</span> push (T element) {
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<span class="literal">if</span> (top == size) {
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<span class="literal">throw</span> <span class="literal">new</span> StackOverflowError();
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}
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elements[top++] = element;
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elementsList.add(element);
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<span class="literal">return</span> <span class="literal">true</span>;
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}
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<span class="literal">public</span> T pop() {
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<span class="literal">if</span> (top == <span class="number">0</span>) {
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<span class="literal">throw</span> <span class="literal">new</span> EmptyStackException();
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}
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--top;
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elementsList.remove(top);
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<span class="literal">return</span> elements[top];
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}
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<span class="literal">public</span> T peek() {
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<span class="literal">if</span> (top == <span class="number">0</span>) {
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<span class="literal">throw</span> <span class="literal">new</span> EmptyStackException();
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}
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<span class="literal">return</span> elements[top - <span class="number">1</span>];
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}
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<span class="literal">public</span> <span class="literal">boolean</span> isEmpty() {
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<span class="literal">boolean</span> returnBoolean = <span class="literal">false</span>;
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<span class="literal">if</span> (top == <span class="number">0</span>) {
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<span class="literal">return</span> <span class="literal">true</span>;
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}
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<span class="literal">return</span> returnBoolean;
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}
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@Override
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<span class="literal">public</span> String toString()
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{
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String returnString = <span class="string">""</span>;
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<span class="literal">for</span> (<span class="literal">int</span> i = top -<span class="number">1</span>; i >= <span class="number">0</span>; --i) {
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returnString += elements[i].toString() + <span class="string">"</span><span class="string">, </span><span class="string">"</span>;
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}
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<span class="literal">return</span> returnString;
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}
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}
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</pre></body>
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