思迁数码科技招聘Java软件工程师笔试真题
10:Math.round(-11.5)等於多少?
A.-11
B.-12
C.-11.5
D.none
11:In the following pieces of code, which one will compile without any error?
A.StringBuffer sb1 = "abcd";
B.Boolean b = new Boolean("abcd");
C.C: byte b = 255;
D.float fl = 1.2;
12:
Give the following method:
public void method( ){
String a,b;
a=new String(“hello world”);
b=new String(“game over”);
System.out.println(a+b+”ok”);
a=null;
a=b;
System.out.println(a);
}
In the absence of compiler optimization, which is the earliest point the object a refered is definitely elibile to be garbage collection.
Give the following method:
public void method( ){
String a,b;
a=new String(“hello world”);
b=new String(“game over”);
System.out.println(a+b+”ok”);
a=null;
a=b;
System.out.println(a);
}
In the absence of compiler optimization, which is the earliest point the object a refered is definitely elibile to be garbage collection.
A.before line 5
B.before line 6
C.before line 7
D.before line 9
13:
Give the following java class:
public class Example{
static int x[]=new int[15];
public static void main(String args[]){
System.out.println(x[5]);
}
}
Which statement is corrected?
Give the following java class:
public class Example{
static int x[]=new int[15];
public static void main(String args[]){
System.out.println(x[5]);
}
}
Which statement is corrected?
A.When compile, some error will occur.
B.When run, some error will occur.
C.Output is zero.
D.Output is null.
14: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
简答题
15:15个教徒和15 个非教徒在深海上遇险，必须将一半的人投入海中，其余的人才能幸免于难，于是想了一个办法：30个人围成一圆圈，从第一个人开始依次报数，每数到第九个人就将他扔入大海，如此循环进行直到仅余15个人为止。问怎样排法，才能使每次投入大海的都是非教徒。
16:构造器Constructor是否可被override?
17:简单介绍一下IOC的实现原理。(写出代码最好)
18:说出数据连接池的工作机制是什么?
19:列出一些控制流程的方法;
20:找出两个字符串中最大子字符串,如"abractyeyt","dgdsaeactyey"的最大子串为"actyet"
21:请写一个java程序实现数据库缓冲池的功能?
22:Tomcat里实现会话session复制，有那些方法?
23:简单介绍JSP的标记库?
24:hibernate的2级缓存有那些缓存策略?每种缓存策略的使用范围?
25:不用乘法或加法给一个数增加7倍。