大公司的Java面试题集.pdf

Java A B C DIBM E Trade Siebel Motorola SUN FE G H I J B K L MON POQ R S H T U V WOQ9XZY O a bOc9 9dA e f hg ikj l nm fIDE o p q r s t f u v w x y z U 9 k IDE O U q R f k O dA KJava I U FfHibernate Eclipse 9 command design pattern K 0 3 4 O F O 9 2O HashMap null BA CD key EF 3 5 76 89 F G b R Hashtable 面试交流网 h t t p w w w m s j l n e t H Collection 2 Collections A Collection K V b 1 I J Set 2 List Collections K K V L M N O O P Q V R7S X T U X 5 76 8 VO W M N assert 1 4 X Y A ZD boolean 7 R U assert O 7 7 a true t As t b AssertionError c assert O Z d e As t 7 9 C AssertionError f g h7i j Y k source 1 4 g s t l m Y k ea g s tassert d e n GC K M N M N GC GC K O i o Gabage Collection qpO Q K r s7t vu 9 xw y z m qp A U N U O 9 Java GC R 7 O OK s 7 O p f v String Object Math round 11 5 r Math round 11 5 r Math round 11 5 12 Math round 11 5 11 round 9 g v vg k 1 2 Gfloor 9 short s1 1 s1 s1 1 MON m short s1 1 s1 1 MON m short s1 1 s1 s1 1 s1 1 O Kint 7 short s1 1 s1 1 R j9 sleep 2 wait M NO sleep K 5 Thread F 5 7 O m m G 5 x OK F sleepU wait K Object 9 wait 7 5 9 O 9 K notify D notifyAll F 5 O Java L goto L q n0 f OK O B 面试交流网 h t t p w w w m s j l n e t L length String L length L length length String length Overload 2 Override Overloaded K s R v 9 C cOverriding2 Overloading K Java U F cOverriding K O Q OverloadingK Q A G 2 g 0 c Overriding H x F A H U vg U vg t Overloading Overloaded K R v vC C W m 0 f 9 runtime exception ArithmeticException ArrayStoreException BufferOverflowException BufferUnderflowException CannotRedoException CannotUndoException ClassCastException CMMException ConcurrentModificationException DOMException EmptyStackException IllegalArgumentException IllegalMonitorStateException IllegalPathStateException IllegalStateException ImagingOpException IndexOutOfBoundsException MissingResourceException NegativeArraySizeException NoSuchElementException NullPointerException ProfileDataException ProviderException RasterFormatException SecurityException SystemException UndeclaredThrowableException UnmodifiableSetException UnsupportedOperationException n error 2 exception M NO error 7 U K U R q W Q k xp O U R U9 Q a abstract class H f H O As t H g K 9 7 P G 7 G H OR F A interface K K L U7 J R static final r 0 B A O v U Q H R EF H 7 A 0 i H R EJVM U i 5 run R 5 A ConstructorK s R override ConstructorU A UO cOverriding v R F Overloading AK s R String String Kfinal U R H AdA 5 synchronized kG H 5 K s R try finally l code U MON return K return 面试交流网 h t t p w w w m s j l n e t n F G 2 8 C U r O F Q k 2 3 C x equals y true R U hash code j U U hash code 9 R 9 ON lO OK C K A K C Java 9EqC g dA O 7 g Jg C K A qs R c Singleton Singleton K Java U Class O p Singleton O Q Q Q H private H static private 0 j v public getInstance H A G public class Singleton private Singleton O F O AK U K q 9 h7i Kprivate F private static Singleton instance new Singleton l k class R public static Singleton getInstance return instance Q public class Singleton private static Singleton instance null public static synchronized Singleton getInsta