From 338b2b16b6934d27dc4cd536fb5527b71985de4f Mon Sep 17 00:00:00 2001
From: bjculkin <bjculkin@mix.wvu.edu>
Date: Fri, 17 Mar 2017 19:46:55 -0400
Subject: Add more toString/hashCode/equals

---
 .../main/java/bjc/utils/esodata/SimpleStack.java   | 49 ++++++++++++++++++----
 1 file changed, 40 insertions(+), 9 deletions(-)

(limited to 'BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java')

diff --git a/BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java b/BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java
index ec01280..1de06a6 100644
--- a/BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java
+++ b/BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java
@@ -6,7 +6,7 @@ import java.util.LinkedList;
 /**
  * Simple implementation of a stack.
  *
- * @param T
+ * @param <T>
  *                The datatype stored in the stack.
  * @author Ben Culkin
  */
@@ -29,14 +29,14 @@ public class SimpleStack<T> extends Stack<T> {
 	@Override
 	public T pop() {
 		if(backing.isEmpty()) throw new StackUnderflowException();
-		
+
 		return backing.pop();
 	}
 
 	@Override
 	public T top() {
 		if(backing.isEmpty()) throw new StackUnderflowException();
-		
+
 		return backing.peek();
 	}
 
@@ -49,14 +49,45 @@ public class SimpleStack<T> extends Stack<T> {
 	public boolean empty() {
 		return backing.size() == 0;
 	}
-	
-	@Override
-	public String toString() {
-		return backing.toString();
-	}
-	
+
 	@SuppressWarnings("unchecked")
 	public T[] toArray() {
 		return (T[]) backing.toArray();
 	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+
+		int result = 1;
+		result = prime * result + ((backing == null) ? 0 : backing.hashCode());
+
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if(this == obj) return true;
+		if(obj == null) return false;
+		if(getClass() != obj.getClass()) return false;
+
+		SimpleStack<?> other = (SimpleStack<?>) obj;
+
+		if(backing == null) {
+			if(other.backing != null) return false;
+		} else if(!backing.equals(other.backing)) return false;
+
+		return true;
+	}
+
+	@Override
+	public String toString() {
+		StringBuilder builder = new StringBuilder();
+
+		builder.append("SimpleStack [backing=");
+		builder.append(backing);
+		builder.append("]");
+
+		return builder.toString();
+	}
 }
-- 
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