谁能把这些题做一下

QINJIAN990

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 ：welcome

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.

adamed

1.welcome 形参和实参的问题。
2.A   for循环中间部分只要为true就可以继续。
3。BE 这道题不好意思的用Eclipse试验了一下。 D虽然也不对但是原因不是由于继承的问题而是类型错误。
4.A 内部类 看成类中的一个函数。B错。可以用o.new Inner();
5.A
6。BG
7 这个实在不知......

renyijiang

3 AC,adamed 题目没看好　Ｂ方法重写，但级别降低不允许，Ｅ　ｓｔａｔｉｃ出错，Ｄｒｅｔｕｒｎ　ｉｎｔ

adamed

居然把单词看错了。天啊。。。。。
我可怜的4级词汇啊。。。。。。。

lanzhendong

我也想知道的