有人可以告诉我,我不能建立此代码? Gauge有问题,但我不明白我需要改变什么或什么。 当我尝试Bulid时,它显示错误。 Building "Alert01"
warning: [options] source value 1.3 is obsolete and will be removed in a future release
warning: [options] target
当我尝试作为hoaz说来运行一个线程,然后它给下面的错误 startApp threw an Exception
java.lang.NullPointerException
java.lang.NullPointerException
at threadlearn.Midlet.startApp(Midlet.java:28)
MIDlet.java public class