凌志软件 中级软件工程师.doc

凌志软件 中级软件工程师选择题 1: if (a = true) Whatwillbetheresultofexecutingthefollowingcode? booleana=true; booleanb=false; booleanc=true; if(a=true) if(b=true) if(c=true)System.out.println(Somethingsaretrueinthisworld); elseSystem.out.println(Nothingistrueinthisworld!); elseif(a&(b=c)System.out.println(Itstooconfusingtotellwhatistrueandwhatisfalse); elseSystem.out.println(Heythiswontcompile); Choices:What will be the result of executing the following code? boolean a = true; boolean b = false; boolean c = true; if (b = true) if (c = true) System.out.println(Some things are true in this world); else System.out.println(Nothing is true in this world!); else if (a & (b = c) System.out.println(Its too confusing to tell what is true and what is false); else System.out.println(Hey this wont compile); Choices:A.The code wont compile B.Some things are true in this world will be printed C.Hey this wont compile will be printed D.None of these 2:使用 JDBC 可以做到的是 A.把二进制代码传送到任何关系数据库中 B.把 Java 源代码传送到任何关系数据库中 C.把表单信息传送到任何关系数据库中 D.很容易地把 SQL 语句传送到任何关系数据库中 3: ThefollowingcodeisentirecontentsofafilecalledExample.java,causespreciselyoneerrorduringcompilation: classSubClassextendsBaseClass classBaseClass() Stringstr; publicBaseClass() System.out.println(“ok”); publicBaseClass(Strings) str=s; publicclassExample publicvoidmethod() SubClasss=newSubClass(“hello”); BaseClassb=newBaseClass(“world”); Whichlinewouldbecausetheerror?The following code is entire contents of a file called Example.java,causes precisely one error during compilation: class SubClass extends BaseClass class BaseClass() String str; public BaseClass() System.out.println(“ok”); public BaseClass(String s) str=s; public class Example public void method() SubClass s=new SubClass(“hello”); BaseClass b=new BaseClass(“world”); Which line would be cause the error? A.9 B.10 C.11 D.12 4:软件生命周期的瀑布模型把软件项目分为3个阶段、8个子阶段，以下哪一个是正常的开发顺序? A.计划阶段、开发阶段、运行阶段 B.设计阶段、开发阶段、编码阶段 C.设计阶段、编码阶段、维护阶段 D.计划阶段、编码阶段、测试阶段 5: Whatwillbetheresultofexecutingthefollowingcode? publicstaticvoidmain(Stringargs) chardigit=a; for(inti=0;i10;i+) switch(digit) casex: intj=0; System.out.println(j); default: intj=100; System.out.println(j); inti=j; System.out.println(i); Choices:What will be the result of executing the following code? public static void main(String args) char digit = a; for (int i = 0; i =0:methodB(); System.out.println(i); publicvoidmethodB() System.out.println(Thevaluemustnotbenegative); publicstaticvoidmain(Stringargs) AssertTesttest=newAssertTest(); test.methodA(-10); What will happen when you attempt to compile and run the following code?(Assume that the code is compiled and run with assertions enabled.)public class AssertTestpublic void methodA(int i)assert i = 0 : methodB();System.out.println(i);public void methodB() System.out.println(The value must not be negative);public static void main(String args)AssertTest test = new AssertTest();test.methodA(-10); A.it will print -10 B.it will result in AssertionError showing the message-“the value must not be negative”. C.the code will not compile. D.None of these. 16:以下的C程序代码片段运行后C和d的值分别是多少 Int a =1,b =2; Int c,d; c =(a&b)&a; d =(a&b)&a; A.0,0 B.0,1 C.1,0 D.1,1 17:Which method you define as the starting point of new thread in a class from which new the thread can be excution? A.public void start() B.public void run() C.public void runnable() D.public static void main(String args) 简答题 18:Java中的异常处理机制的简单原理和应用。 19:Static Inner Class 和 Inner Class的不同，说得越多越好。 20:正向最大匹配分词，怎么做最快？ 21:数组a