编写小程序，在小程序窗口中显示字符串“java程序设计”，按下键盘上的箭头键，可按照箭头方向移动（提示：得到键盘键代码的方法是e.getKeyCode()，上、下、左、右键的编码分别用常量VK_UP 、VK_DOWN 、VK_LEFT 、VK_RIGHT表示）。-Writing small programs, in small program the window displays string "Java program design", press the arrow keys on the keyboard, can according to the arrow direction (hint: get keyboard keys e.g etKeyCode code method is (), up, down, left, right click of the coding respectively with constant VK_UP, VK_DOWN, VK_LEFT, VK_RIGHT said).