華為公司 java 面試題(轉(zhuǎn))
第一部分:選擇題
QUESTION NO: 1
1、public class Test {
public static void changeStr(String str){
str="welcome";
}
public static void main(String[] args) {
String str="1234";
changeStr(str);
System.out.println(str);
}
}
Please write the output result :
QUESTION NO:2
1. public class Test {
2. static boolean foo(char c) {
3. System.out.print(c);
4. return true;
5. }
6. public static void main( String[] argv ) {
7. int i =0;
8. for ( foo('A'); foo('B')&&(i<2); foo('C')){
9. i++ ;
10. foo('D');
12. }
13. }
14. }
What is the result?
A. ABDCBDCB
B. ABCDABCD
C. Compilation fails.
D. An exception is thrown at runtime.
QUESTION NO: 3
1. class A {
2. protected int method1(int a, int b) { return 0; }
3. }
Which two are valid in a class that extends class A? (Choose two)
A. public int method1(int a, int b) { return 0; }
B. private int method1(int a, int b) { return 0; }
C. private int method1(int a, long b) { return 0; }
D. public short method1(int a, int b) { return 0; }
E. static protected int method1(int a, int b) { return 0; }
QUESTION NO: 4
1. public class Outer{
2. public void someOuterMethod() {
3. // Line 3
4. }
5. public class Inner{}
6. public static void main( String[]argv ) {
7. Outer o = new Outer();
8. // Line 8
9. }
10. }
Which instantiates an instance of Inner?
A. new Inner(); // At line 3
B. new Inner(); // At line 8
C. new o.Inner(); // At line 8
D. new Outer.Inner(); // At line 8//new Outer().new Inner()
QUESTION NO: 5
Which method is used by a servlet to place its session ID in a URL that is written to the servlet’s response output stream?
A. The encodeURL method of the HttpServletRequest interface.
B. The encodeURL method of the HttpServletResponse interface.
C. The rewriteURL method of the HttpServletRequest interface.
D. The rewriteURL method of the HttpServletResponse interface.
QUESTION NO: 6
Which two are equivalent? (Choose two)
A. <%= YoshiBean.size%>
B. <%= YoshiBean.getSize()%>
C. <%= YoshiBean.getProperty("size")%>
D. <jsp:getProperty id="YoshiBean" param="size"/>
E. <jsp:getProperty name="YoshiBean" param="size"/>
F. <jsp:getProperty id="YoshiBean" property="size"/>
G. <jsp:getProperty name="YoshiBean" property="size"/>
QUESTION NO: 7
Which of the following statements regarding the lifecycle of a session bean are correct?
1. java.lang.IllegalStateException is thrown if SessionContext.getEJBObject() is invoked when a stateful session bean instance is passivated.
2. SessionContext.getRollbackOnly() does not throw an exception when a session bean with bean-managed transaction demarcation is activated.
3. An exception is not thrown when SessionContext.getUserTransaction() is called in the afterBegin method of a bean with container-managed transactions.
4. JNDI access to java:comp/env is permitted in all the SessionSynchronization methods of a stateful session bean with container-managed transaction demarcation.
5. Accessing resource managers in the SessionSynchronization.afterBegin method of a stateful session bean with bean-managed transaction does not throw an exception.
第二部分:概念題
1. 描述Struts體系結(jié)構(gòu)?對(duì)應(yīng)各個(gè)部分的開發(fā)工作主要包括哪些?
2. XML包括哪些解釋技術(shù),區(qū)別是什么?
3. JSP有哪些內(nèi)置對(duì)象和動(dòng)作?它們的作用分別是什么?
4、SQL問答題
SELECT * FROM TABLE
和
SELECT * FROM TABLE
WHERE NAME LIKE '%%' AND ADDR LIKE '%%'
AND (1_ADDR LIKE '%%' OR 2_ADDR LIKE '%%'
OR 3_ADDR LIKE '%%' OR 4_ADDR LIKE '%%' )
的檢索結(jié)果為何不同?
5、SQL問答題
表結(jié)構(gòu):
1、 表名:g_cardapply
字段(字段名/類型/長度):
g_applyno varchar 8;//申請(qǐng)單號(hào)(關(guān)鍵字)
g_applydate bigint 8;//申請(qǐng)日期
g_state varchar 2;//申請(qǐng)狀態(tài)
2、 表名:g_cardapplydetail
字段(字段名/類型/長度):
g_applyno varchar 8;//申請(qǐng)單號(hào)(關(guān)鍵字)
g_name varchar 30;//申請(qǐng)人姓名
g_idcard varchar 18;//申請(qǐng)人身份證號(hào)
g_state varchar 2;//申請(qǐng)狀態(tài)
其中,兩個(gè)表的關(guān)聯(lián)字段為申請(qǐng)單號(hào)。
題目:
1、 查詢身份證號(hào)碼為440401430103082的申請(qǐng)日期
2、 查詢同一個(gè)身份證號(hào)碼有兩條以上記錄的身份證號(hào)碼及記錄個(gè)數(shù)
3、 將身份證號(hào)碼為440401430103082的記錄在兩個(gè)表中的申請(qǐng)狀態(tài)均改為07
4、 刪除g_cardapplydetail表中所有姓李的記錄
posted on 2006-05-19 17:52 liaojiyong 閱讀(355) 評(píng)論(0) 編輯 收藏 所屬分類: Java 、Knowledge