单项选择题
A.“Hello” B.‘world’ C.\u2345 D.new String(“good”)
InputStream对象的方法read(byte[]buffer,intoffset,intlength)的...
单项选择题InputStream对象的方法read(byte[] buffer,int offset,int length)的返回值的含义是哪项?()
A.固定长度的字节数 B.1 C.-1 D.运行时异常被抛出
Map系列对象中,哪个对象的内部实现是双向链表?()A.HashMapB.HashTableC.LinkedH...
单项选择题Map系列对象中,哪个对象的内部实现是双向链表?()
A.HashMap B.HashTable C.LinkedHashMap D.TreeMap
class Birds { public static void main(String [] args) ...
class Birds { public static void main(String [] args) { try { throw new Exception(); } catch (Exception e) { try { throw new Exception(); } catch (Exception e2) { System.out.print("inner "); } System.out.print("middle "); } System.out.print("outer "); } } 结果为:()
A.inner B.inner outer C.middle outer D.inner middle outer