《爸爸你辛苦了》作文100字
選擇題
1:Which statements about Java code security are not true?
A.The bytecode verifier loads all classes needed for the execution of a program.
B.Executing code is performed by the runtime interpreter.
C.At runtime the bytecodes are loaded, checked and run in an interpreter.
D.The class loader adds security by separating the namespaces for the classes of the local file system from those imported from network sources.
2:What is the result when you compile and run the following code?
public class Test
{
public void method()
{
for(int i = 0; i < 3; i++)
{
System.out.print(i);
}
System.out.print(i);
}
}
Choices:
What is the result when you compile and run the following code?
public class Test
{
public void method()
{
for(int i = 0; i < 3; i++)
{
System.out.print(i);
}
System.out.print(i);
}
}
Choices:
A.0122
B.0123
C.Compilation error
D.None of these
3:
Give the following code:
public class Example{
public static void main(String args[] ){
int l=0;
do{
System.out.println(“Doing it for l is:”+l);
}while(--l>0)
System.out.println(“Finish”);
}
}
Which well be output:
Give the following code:
public class Example{
public static void main(String args[] ){
int l=0;
do{
System.out.println(“Doing it for l is:”+l);
}while(--l>0)
System.out.println(“Finish”);
}
}
Which well be output:
A.Doing it for l is 3
B.Doing it for l is 1
C.Doing it for l is 2
D.Doing it for l is 0
4:Math.round(11.5)等於多少?
A.11
B.12
C.11.5
D.none
5:
What will happen when you attempt to compile and run the following code?
int Output = 10;
boolean b1 = false;
if((b1 == true) && ((Output += 10) == 20))
{
System.out.println("We are equal " + Output);
}
else
{
System.out.println("Not equal! " + Output);
}
Choices:
What will happen when you attempt to compile and run the following code?
int Output = 10;
boolean b1 = false;
if((b1 == true) && ((Output += 10) == 20))
{
System.out.println("We are equal " + Output);
}
else
{
System.out.println("Not equal! " + Output);
}
Choices:
A.Compilation error, attempting to perform binary comparison on logical data type
B.Compilation and output of "We are equal 10".
C.Compilation and output of "Not equal! 20".
D.Compilation and output of "Not equal! 10".
6:
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 AssertTest{
public 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);
}
}
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 AssertTest{
public 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.
7:
What is the result when you compile and run the following code?
public class ThrowsDemo
{
static void throwMethod()
{
System.out.println("Inside throwMethod.");
throw new IllegalAccessException("demo");
}
public static void main(String args[])
{
try
{
throwMethod();
}
catch (IllegalAccessException e)
{
System.out.println("Caught " + e);
}
}
}
Choices:
What is the result when you compile and run the following code?
public class ThrowsDemo
{
static void throwMethod()
{
System.out.println("Inside throwMethod.");
throw new IllegalAccessException("demo");
}
public static void main(String args[])
{
try
{
throwMethod();
}
catch (IllegalAccessException e)
{
System.out.println("Caught " + e);
}
}
}
Choices:
A.Compilation error
B.Runtime error
C.Compile successfully, nothing is printed.
D.Inside throwMethod. followed by caught:java.lang.IllegalAccessExcption: demo
8:假定a和b為int型變量,則執行下述語句組后,b的值為
a=1;
b=10;
do
{
b-=a;
a++;
} while (b--<0);
A.9
B.-2
C.-1
D.8
9:
public class X{
public Object m(){
Object o = new Float(3.14F);/pic/p>
Object [] oa = new Object[1];/pic/p>
oa[0] = o;/pic/p>
o=null;/pic/p>
return oa[0];/pic/p>
}
}
When is the Float object, created in line 3,eligible for garbage collection?
public class X{
public Object m(){
Object o = new Float(3.14F);/pic/p>
Object [] oa = new Object[1];/pic/p>
oa[0] = o;/pic/p>
o=null;/pic/p>
return oa[0];/pic/p>
}
}
When is the Float object, created in line 3,eligible for garbage collection?
A.just after line 5.
B.just after line 6
C.just after line 7(that is,as the method returns)
D.never in this method
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程序代碼片段運行后C和d的值分別是多少
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
簡答題
15:15個教徒和15 個非教徒在深海上遇險，必須將一半的人投入海中，其余的人才能幸免于難，于是想了一個辦法：30個人圍成一圓圈，從第一個人開始依次報數，每數到第九個人就將他扔入大海，如此循環進行直到僅余15個人為止。問怎樣排法，才能使每次投入大海的都是非教徒。
16:構造器Constructor是否可被override?
17:簡單介紹一下IOC的實現原理。(寫出代碼最好)
18:說出數據連接池的工作機制是什么?
19:列出一些控制流程的方法;
20:找出兩個字符串中最大子字符串,如"abractyeyt","dgdsaeactyey"的最大子串為"actyet"
21:請寫一個java程序實現數據庫緩沖池的功能?
22:Tomcat里實現會話session復制，有那些方法?
23:簡單介紹JSP的標記庫?
24:hibernate的2級緩存有那些緩存策略?每種緩存策略的使用范圍?
25:不用乘法或加法給一個數增加7倍。
【《爸爸你辛苦了》作文100字】相關文章：
爸爸，您辛苦了作文（精選28篇）06-13
媽媽你辛苦了作文（精選33篇）05-14
辛虧有你母親作文（精選38篇）03-31
爸爸，您辛苦了作文（通用45篇）06-12
媽媽你辛苦了作文（通用36篇）03-07
媽媽你辛苦了作文（通用33篇）05-02
爸爸您辛苦了作文400字（精選29篇）12-26
老師，你辛苦了作文（精選42篇）09-10
媽媽你辛苦了初中作文（通用3篇）02-22
“爸爸、媽媽,你們辛苦了!”給父母的信作文（精選24篇）01-07
- 相關推薦