考题
Which two HTTP methods are used to process from data in a servlet? ()A、 do GETB、 do PutC、 do PostD、 do TraceE、 do SubmitF、 do Process
考题
Which the statement is true?()A、 The Error class is a Runtime Exception.B、 No exceptions are subclasses of Error.C、 Any statement that may throw an Error must be enclosed in a try block.D、 any statement that may throw an Exception must be enclosed in a try block.E、 Any statement that may throw an Runtime Exception must be enclosed in a try block.
考题
You need to store a floating point number,called Tsquare,in the session scope. Which two code snippetsallow you to retrieve this value?()A、float Tsquare = session.getFloatAttribute("Tsquare");B、float Tsquare = (Float) session.getAttribute("Tsquare");C、float Tsquare = (float) session.getNumericAttribute("Tsquare");D、float Tsquare = ((Float) session.getAttribute.("Tsquare")).floatValue();E、float Tsquare = ((Float) session.getFloatAttribute.("Tsquare")).floatValue;
考题
package foo; public class Outer ( public static class Inner ( ) ) Which statement is true? () A、 An instance of the Inner class can be constructed with “new Outer.Inner ()”B、 An instance of the inner class cannot be constructed outside of package foo.C、 An instance of the inner class can only be constructed from within the outer class.D、 From within the package bar, an instance of the inner class can be constructed with “new inner()”
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public class ExceptionTest { class TestException extends Exception {} public void runTest () throws TestException {} public void test () /* Point X*/ { runTest (); } } At point X on line 4, which code can be added to make the code compile?() A、 Throws Exception.B、 Catch (Exception e).C、 Throws RuntimeException.D、 Catch (TestException e).E、 No code is necessary.
考题
public class Test { public static void main( String[] args) { String foo = args[1]; String bar = args[2]; String baz = args[3]; System.out.println(“baz = “ + baz); } } And the command line invocation: java Test red green blue What is the result?() A、 baz =B、 baz = nullC、 baz = blueD、 Compilation fails.E、 An exception is thrown at runtime.
考题
import语句的作用是()A、导入包中成员B、创建包C、既可导入包成员,也可创建包D、访问控制
考题
1. class MyThread implements Runnable { 2. public void run() { 3. System.out.print("go "); 4. } 5. 6. public static void main(String [] args) { 7. // insert code here 8. t.start(); 9. } 10. } 和如下四句: Thread t = new MyThread(); MyThread t = new MyThread(); Thread t = new Thread(new Thread()); Thread t = new Thread(new MyThread()); 分别插入到第5行,有几个可以通过编译?() A、0B、1C、2D、3
考题
弹性布局式从JDK1.4版才加入的一种非常灵活的布局管理器.它的特点在预通过约束来限定组件和容器之间,组件和组件之间的位置关系。
考题
下面类中属于字节I/O流的是()A、FileReaderB、FileInputStreamC、BufferedOutputStreamD、BufferedWriter