Java编测试程序

public class JiaQi
{
public interface Interface1
{
public abstract void ArrayStack ();
public abstract boolean isEmpty();
public abstract void makeEmpty();
public abstract int top();
public abstract void pop();
public abstract int topAndPop();
public abstract void push(int x);
public static final int DEFAULT_CAPACITY = 10;
}
public static void main(String[] args)
{

//System.out.println("Hello World!");
class text implements Interface1
{
private int[] theArray;
private int topOfStack;
public void ArrayStack()
{
theArray = new int[DEFAULT_CAPACITY];
topOfStack = -1;
}

public boolean isEmpty()
{
return topOfStack == -1;
}

public void makeEmpty()
{
topOfStack = -1;
}

public void push(int x)
{