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public class DemoStack {

private int maxSize;

private long[] stackArray;

private int top;

public DemoStack(int s) {

maxSize = s;

stackArray = new long[maxSize];

top = -1;

}

public void push(long j) {

stackArray[++top] = j;

}

public long pop() {

return stackArray[top--];

}

public long peek() {

return stackArray[top];

}

public boolean isEmpty() {

return (top == -1);

}

public boolean isFull() {

return (top == maxSize - 1);

}

public static void main(String[] args) {

DemoStack theStack = new DemoStack(10);

theStack.push(1);

theStack.push(2);

theStack.push(3);

theStack.push(4);

theStack.push(5);

while (!theStack.isEmpty()) {

long value = theStack.pop();

System.out.print(value);

System.out.print(" ");

}

System.out.println("");

}

}