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hrmsEjb/org/apache/commons/collections/ArrayStack.java

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+package org.apache.commons.collections;
+
+import java.util.ArrayList;
+import java.util.EmptyStackException;
+
+public class ArrayStack extends ArrayList implements Buffer {
+  private static final long serialVersionUID = 2130079159931574599L;
+  
+  public ArrayStack() {}
+  
+  public ArrayStack(int paramInt) {
+    super(paramInt);
+  }
+  
+  public boolean empty() {
+    return isEmpty();
+  }
+  
+  public Object get() {
+    int i = size();
+    if (i == 0)
+      throw new BufferUnderflowException(); 
+    return get(i - 1);
+  }
+  
+  public Object peek() throws EmptyStackException {
+    int i = size();
+    if (i <= 0)
+      throw new EmptyStackException(); 
+    return get(i - 1);
+  }
+  
+  public Object peek(int paramInt) throws EmptyStackException {
+    int i = size() - paramInt - 1;
+    if (i < 0)
+      throw new EmptyStackException(); 
+    return get(i);
+  }
+  
+  public Object pop() throws EmptyStackException {
+    int i = size();
+    if (i <= 0)
+      throw new EmptyStackException(); 
+    return remove(i - 1);
+  }
+  
+  public Object push(Object paramObject) {
+    add((E)paramObject);
+    return paramObject;
+  }
+  
+  public Object remove() {
+    int i = size();
+    if (i == 0)
+      throw new BufferUnderflowException(); 
+    return remove(i - 1);
+  }
+  
+  public int search(Object paramObject) {
+    int i = size() - 1;
+    for (byte b = 1; i >= 0; b++) {
+      E e = get(i);
+      if ((paramObject == null && e == null) || (paramObject != null && paramObject.equals(e)))
+        return b; 
+      i--;
+    } 
+    return -1;
+  }
+}