import java.util.List;public class FinalTest {public static List a;public static void get() {System.out.println(a.size());}public static void main(String[] args) {FinalTest ft = new FinalTest();ft.get();}}A、空指针异常B、其它异常C、编译错误
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时间:2024-01-17 21:58:16
import java.util.List;public class FinalTest {public static List a;public static void get() {System.out.println(a.size());}public static void main(String[] args) {FinalTest ft = new FinalTest();ft.get();}}A、空指针异常B、其它异常C、编译错误