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POjava.lang.ArrayIndexOutOfBoundsException: 0 (stack implementation)
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  1. POjava.lang.ArrayIndexOutOfBoundsException: 0 (stack implementation)
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    copied!<p>I'm implementing a stack application, however every time I push an item onto the stack I receive a java.lang.ArrayIndexOutOfBoundsException: 0.</p> <pre><code>//stack constructor public Stack() { stack = new int[STACKSIZE]; top = 0; } //push code public void push(int n) throws Exception { if(top == STACKSIZE) { throw new Exception("Stack Overflow"); } else { stack[top++] = n; } } //stack size variable protected int STACKSIZE; //get stack size public int getStackSize() { return STACKSIZE; } //set stack size public void setStackSize(int size) { STACKSIZE = size; } //declaring a new stack object in the GUI class private Stack stack = new Stack(); //variable for default stack size (class level variable) private int stackSize = 0; //setting the size stack.setStackSize(stackSize); //code where push is being used (located within a jbutton event) try { int size = stack.getStackSize(); stack.setStackSize(++size); String inputNumber = EquationLabel.getText().replaceAll(remove, replaceWith); int number = Integer.parseInt(inputNumber); clear(); stack.push(number); } catch (NumberFormatException error) { MessageLabel.setText("Error: " + error.getMessage()); error.printStackTrace(); } catch (Exception error) { MessageLabel.setText("Error: " + error.getMessage()); error.printStackTrace(); } //stack trace output java.lang.ArrayIndexOutOfBoundsException: 0 at Stack.Stack.push(Stack.java:66) at calculator.Calculator.actionPerformed(Calculator.java:268) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) at java.awt.Component.processMouseEvent(Component.java:6505) at javax.swing.JComponent.processMouseEvent(JComponent.java:3321) at java.awt.Component.processEvent(Component.java:6270) at java.awt.Container.processEvent(Container.java:2229) at java.awt.Component.dispatchEventImpl(Component.java:4861) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Component.dispatchEvent(Component.java:4687) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422) at java.awt.Container.dispatchEventImpl(Container.java:2273) at java.awt.Window.dispatchEventImpl(Window.java:2713) at java.awt.Component.dispatchEvent(Component.java:4687) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:707) at java.awt.EventQueue.access$000(EventQueue.java:101) at java.awt.EventQueue$3.run(EventQueue.java:666) at java.awt.EventQueue$3.run(EventQueue.java:664) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87) at java.awt.EventQueue$4.run(EventQueue.java:680) at java.awt.EventQueue$4.run(EventQueue.java:678) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:677) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105) at java.awt.EventDispatchThread.run(EventDispatchThread.java:90) </code></pre> <p>Thanks for any help/guidance, I'm really unsure on this one.</p>
 

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