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3. string foo = “ABCDE”;  4. foo.substring(3);   5. foo.concat(“XYZ”);   6.   Type the value of foo at line 6.()

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更多 “填空题3. string foo = “ABCDE”;  4. foo.substring(3);   5. foo.concat(“XYZ”);   6.   Type the value of foo at line 6.()” 相关考题
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考题 1. public interface A {  2. public void doSomething(String thing);  3. }  1. public class AImpl implements A {  2. public void doSomething(String msg) { }  3. }  1. public class B {  2. public A doit() {  3. // more code here  4. }  5.  6. public String execute() { 7. // more code here  8. }  9. }  1. public class C extends B {  2. public AImpl doit() {  3. // more code here  4. }  5.  6. public Object execute() {  7. // more code here  8. }  9. }  Which statement is true about the classes and interfaces in the exhibit?() A、 Compilation will succeed for all classes and interfaces.B、 Compilation of class C will fail because of an error in line 2.C、 Compilation of class C will fail because of an error in line 6.D、 Compilation of class AImpl will fail because of an error in line 2.

考题 3. string foo = “ABCDE”;  4. foo.substring(3);  5. foo.concat(“XYZ”);  6.     Type the value of foo at line 6.()

考题 常见的网上购物流程是()。A、1.查找商品2.提交订单3.放入购物车4.查看订单状态5.收货确认B、1.查找商品2.提交订单3.查看订单状态4.放入购物车5.收货确认C、1.查找商品2.放入购物车3.提交订单4.查看订单状态5.收货确认D、1.查找商品2.放入购物车3.提交订单4.收货确认5.查看订单状态

考题 5. String foo = “base”;   6. foo.substring(0,3);   7. foo.concat(“ket”)  8.   Type the value of foo at line 8.()

考题 1. class SuperFoo {  2. SuperFoo doStuff(int x) {  3. return new SuperFoo(); 4. }  5. }  6.  7. class Foo extends SuperFoo {  8. //insert code here  9. }   下面哪三项分别插入到第8行,可以编译?()A、int doStuff() { return 42; }B、int doStuff(int x) { return 42; }C、Foo doStuff(int x) { return new Foo(); }D、SuperFoo doStuff(int x) { return new Foo(); }

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考题 Given the JSP code: % request.setAttribute("foo", "bar"); %and the Classic tag handler code: 5. public int doStartTag() throws JspException { 6. // insert code here 7. // return int 8. } Assume there are no other "foo" attributes in the web application. Which invocation on the pageContextobject,inserted at line 6,assigns "bar" to the variable x?()A、String x = (String) pageContext.getAttribute("foo")B、String x = (String) pageContext.getRequestScope("foo")C、It is NOT possible to access the pageContext object from within doStartTagD、String x = (String) pageContext.getRequest().getAttribute("foo")E、String x = (String) pageContext.getAttribute("foo", PageContext.ANY_SCOPE)

考题 Given: 1.% int[] nums = {42,420,4200}; 2.request.setAttribute("foo", nums); % 3.${5 + 3 lt 6} 4.${requestScope[’foo’][0] ne 10 div 0} 5. ${10 div 0} What is the result?()A、True trueB、False trueC、False true 0D、True true InfinityE、False true Infinity

考题 Given  1.  public class Foo {  2.  public static void main (String [] args) }  3.  try { return;}  4.  finally { Syste.out.printIn (“Finally”);}  5. }  6. }   What is the result( )?A、 The program runs and prints nothing.B、 The program runs and prints “Finally”.C、 The code comiles. But an exception is thrown at runtime.D、 The code will not compile because the catch block is missing.

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考题 填空题5. String foo = “base”;  6. foo.substring(0,3);  7. foo.concat(“ket”)  8.     Type the value of foo at line 8.()

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考题 填空题3. string foo = “ABCDE”;  4. foo.substring(3);   5. foo.concat(“XYZ”);   6.   Type the value of foo at line 6.()

考题 单选题2. public class Foo implements Runnable (  3. public void run (Thread t) {  4. system.out.printIn(“Running.”);  5. }  6. public static void main (String[] args)  {  7. new thread (new Foo()).start(); 8. )  9. )   What is the result?()A  An exception is thrown.B  The program exists without printing anything.C  An error at line 1 causes compilation to fail.D  An error at line 6 causes the compilation to fail.E  “Running” is printed and the program exits.

考题 单选题int index = 1;  String [] test = new String[3];  String foo = test[index];     What is the result?()A  Foo has the value “”B  Foo has the value nullC  An exception is thrownD  The code will not compile

考题 单选题1. public class Employee {  2. String name;  3. double baseSalary;  4. Employee(String name, double baseSalary) {  5. this.name = name;  6. this.baseSalary = baseSalary;  7. }  8. }  And:  1. public class Salesperson extends Employee { 2. double commission;  3. public Salesperson(String name, double baseSalary,  4. double commission) {  5. // insert code here  6. } 7. }  Which code, inserted at line 7, completes the Salesperson constructor?()A  this.commission = commission;B  superb(); commission = commission;C  this.commission = commission; superb();D  super(name, baseSalary); this.commission = commission;E  super(); this.commission = commission;F  this.commission = commission; super(name, baseSalary);

考题 单选题Given a class Repetition:  1. package utils;  2.  3. public class Repetition {  4. public static String twice(String s) { return s + s; }  5. }  and given another class Demo:  1. // insert code here 2.  3. public class Demo {  4. public static void main(String[] args) {  5. System.out.println(twice(”pizza”));  6. }  7. }  Which code should be inserted at line 1 of Demo.java to compile and run Demo to print“pizzapizza”?()A  import utils.*;B  static import utils.*;C  import utils.Repetition.*;D  static import utils.Repetition. *;E  import utils.Repetition.twice();F  import static utils.Repetition.twice;G  static import utils.Repetition.twice;

考题 填空题1. public class test {  2. public static string output = “”  3.    4. public static void foo(int i) {  5. try {  6. if(i= =1) {  7. throw new Exception ();  8. }  9. output += “1”;  10.}  11. catch(Exception e)  {  12. output += “2”;  13. return;  14.}  15. finally (  16. output += “3”;  17. )  18. output += “4”;  19. } 20.    21. public static void main (string args[])  (  22. foo(0);  23. foo(1);  24.    25. )  26. } What is the value of the variable output at line 24?()

考题 单选题Given: 1. 3.${5 + 3 lt 6} 4.${requestScope[’foo’][0] ne 10 div 0} 5. ${10 div 0} What is the result?()A True trueB False trueC False true 0D True true InfinityE False true Infinity

考题 单选题Given the JSP code: and the Classic tag handler code: 5. public int doStartTag() throws JspException { 6. // insert code here 7. // return int 8. } Assume there are no other "foo" attributes in the web application. Which invocation on the pageContextobject,inserted at line 6,assigns "bar" to the variable x?()A String x = (String) pageContext.getAttribute(foo)B String x = (String) pageContext.getRequestScope(foo)C It is NOT possible to access the pageContext object from within doStartTagD String x = (String) pageContext.getRequest().getAttribute(foo)E String x = (String) pageContext.getAttribute(foo, PageContext.ANY_SCOPE)

考题 单选题常见的网上购物流程是()。A 1.查找商品2.提交订单3.放入购物车4.查看订单状态5.收货确认B 1.查找商品2.提交订单3.查看订单状态4.放入购物车5.收货确认C 1.查找商品2.放入购物车3.提交订单4.查看订单状态5.收货确认D 1.查找商品2.放入购物车3.提交订单4.收货确认5.查看订单状态