我正在学习Java，但在运行示例程序时遇到了问题。我有两个文件:好狗.java:classGoodDog{privateintsize;publicintgetSize(){returnsize;}publicvoidsetSize(ints){size=s;}voidbark(){if(size>60){System.out.println("Wooof!WoooF!");}elseif(size>14){System.out.println("Ruff!Ruff!");}else{System.out.println("Yip!Yip!");}}}GoodDogTestDrive.