在Windows笔记本电脑上工作但由于某些原因不能在Mac上工作的java代码

Question

import java.awt.*; // Contains the Classes for Controls public class increment extends EasyApp // EasyApp provides simplified commands { // for creating controls and making public static void main(String[] args) // the actions method simpler { new increment(); } //-------- creating CONTROLS ----------------------------------- List nums = addList("2|4|6",160,200,50,40,this); TextField number = addTextField("",50,200,100,40,this); public increment() // Constructor { // This runs at the beginning. setTitle("My First GUI App"); // You can do things like setSize(400,300); // changing the Window size number.setFont(new Font("Arial",0,20) ); // or appearance of Controls. } public void actions(Object source,String command) // When a Button is clicked, { // this method decides how if (nums.getSelectedItem().equals("2")){ double num = Double.parseDouble(number.getText()) +2; number.setText(num + ""); } if (nums.getSelectedItem().equals("4")){ double num = Double.parseDouble(number.getText()) +4; number.setText(num + ""); } if (nums.getSelectedItem().equals("6")){ double num = Double.parseDouble(number.getText()) +6; number.setText(num + ""); } } }