Create StackUsingArray.java

StackUsingArray.java

@@ -0,0 +1,46 @@
+package Stacks;
+
+public class StackUsingArrays {
+
+private int[] data;
+private int top;
+
+public static  final int Default_Capacity=10;
+
+public StackUsingArrays throws Exception ()
+	{
+		this.(Default_Capacity);
+	}
+public StackUsingArrays(int capacity) throws Exception()
+	{ if(capacity<1)
+		throw new Exception("Invalid Capacity");
+	this.data=new int[capacity];
+	top=-1;
+	}
+public int size()
+{
+	return this.top+1;
+}
+
+public boolean isEmpty() {
+	return this.size()==0;
+}
+
+public void push(int value) {
+	if(this.size()==data.length)
+		throw new Exception("Stack is Full");
+	this.top++;
+	this.data[this.top]=value;
+}
+
+public int top() throws Exception{
+	if(this.size()==0)
+		throw new Exception("Stack is Empty");
+	int rv=this.data[this.top];
+	this.data[this.top]=0;
+	this.top--;
+	return rv;
+}
+
+}
+