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多选题
Given the following code, which code fragments, when inserted at the indicated location, will succeed in making the program display a button spanning the whole window area?()   import java.awt.*;   public class Q1e65 {   public static void main(String args[]) {   Window win = new Frame();   Button but = new Button("button");   // insert code fragment here  win.setSize(200, 200);   win.setVisible(true);   }   }
A

win.setLayout(new BorderLayout()); win.add(but);

B

win.setLayout(new GridLayout(1, 1)); win.add(but);

C

win.setLayout(new BorderLayout()); win.add(but, BorderLayout.CENTER);

D

win.add(but);

E

win.setLayout(new FlowLayout()); win.add(but);


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更多 “多选题Given the following code, which code fragments, when inserted at the indicated location, will succeed in making the program display a button spanning the whole window area?()   import java.awt.*;   public class Q1e65 {   public static void main(String args[]) {   Window win = new Frame();   Button but = new Button("button");   // insert code fragment here  win.setSize(200, 200);   win.setVisible(true);   }   }Awin.setLayout(new BorderLayout()); win.add(but);Bwin.setLayout(new GridLayout(1, 1)); win.add(but);Cwin.setLayout(new BorderLayout()); win.add(but, BorderLayout.CENTER);Dwin.add(but);Ewin.setLayout(new FlowLayout()); win.add(but);” 相关考题
考题 What happens when you try to compile and run the following program?class Mystery{String s;public static void main(String[] args){Mystery m=new Mystery();m.go();}void Mystery(){s=”constructor”;}void go(){System.out.println(s);}}()A.this code will not compileB.this code compliles but throws an exception at runtimeC.this code runs and “constructor” in the standard outputD.this code runs and writes “null” in the standard output

考题 11.public class Counter{12.public static void main(String[]args){13.int numArgs=/*insert code here*/;14.}15.}and the command line:java Counter one fred 42 Which code,inserted at line 13,captures the number of arguments passed into the program?()A.args.countB.args.lengthC.args.count()D.args.length()E.args.getLength()

考题 public class Test {   public static void main (String args) {  string foo = “blue”;  string bar = foo;   foo = “green”;   System.out.printIn(bar);   }   }   What is the result?()  A、 An exception is thrown.B、 The code will not compile.C、 The program prints “null”D、 The program prints “blue”E、 The program prints “green”

考题 Which declarations will allow a class to be started as a standalone program?()  A、public void main(String args[])B、public void static main(String args[])C、public static main(String[] argv)D、final public static void main(String [] array)E、public static void main(String args[])

考题 Which statements, when inserted at the indicated position in the following code, will cause a runtime exception when attempting to run the program?()   class A {}   class B extends A {}   class C extends A {}   public class Q3ae4 {   public static void main(String args[]) {   A x = new A();   B y = new B();   C z = new C();   // insert statement here   }   } A、x = y;B、z = x;C、y = (B) x;D、z = (C) y;E、y = (A) y;

考题 public class Foo {  static int[] a;  static { a[0]=2; }  public static void main( String[] args) {}  }  Which exception or error will be thrown when a programmer attempts to run this code?() A、 java.lang. StackOverflowErrorB、 java.lang.IllegalStateExceptionC、 java.lang.ExceptionlnlnitializerErrorD、 java.lang.ArraylndexOutOfBoundsException

考题 Given the following code, which code fragments, when inserted at the indicated location, will succeed in making the program display a button spanning the whole window area?()   import java.awt.*;   public class Q1e65 {   public static void main(String args[]) {   Window win = new Frame();   Button but = new Button("button");   // insert code fragment here  win.setSize(200, 200);   win.setVisible(true);   }   }  A、win.setLayout(new BorderLayout()); win.add(but);B、win.setLayout(new GridLayout(1, 1)); win.add(but);C、win.setLayout(new BorderLayout()); win.add(but, BorderLayout.CENTER);D、win.add(but);E、win.setLayout(new FlowLayout()); win.add(but);

考题 public class foo {  static String s;  public static void main (String[]args) {  system.out.printIn (“s=” + s);  } }  What is the result?()  A、 The code compiles and “s=” is printed.B、 The code compiles and “s=null” is printed.C、 The code does not compile because string s is not initialized.D、 The code does not compile because string s cannot be referenced.E、 The code compiles, but a NullPointerException is thrown when toString is called.

考题 package sun.scjp;  public enum Color { RED, GREEN, BLUE }  package sun.beta;  // insert code here  public class Beta {  Color g = GREEN;  public static void main( String[] argv)  { System.out.println( GREEN); }  }  The class Beta and the enum Color are in different packages.  Which two code fragments, inserted individually at line 2 of the Beta declaration, will allow this code to compile?()A、 import sun.scjp.Color.*;B、 import static sun.scjp.Color.*;C、 import sun.scjp.Color; import static sun.scjp.Color.*;D、 import sun.scjp.*; import static sun.scjp.Color.*;E、 import sun.scjp.Color; import static sun.scjp.Color.GREEN;

考题 Given a class Repetition: 1.package utils; 2. 3.public class Repetition{ 4.public static String twice(Strings){returns+s;} 5.} and given another class Demo: 1.//insert code here2. 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、importutils.Repetition.*;D、static importutils.Repetition.*;E、import utils.Repetition.twice();F、import static utils.Repetition.twice;G、static import utils.Repetition.twice;

考题 Given the following code:     1) class Parent {     2) private String name;     3) public Parent(){}     4) }  5) public class Child extends Parent {     6) private String department;  7) public Child() {}  8) public String getValue(){ return name; }     9) public static void main(String arg[]) {     10) Parent p = new Parent();     11) }  12) }  Which line will cause error?()   A、 line 3B、 line 6C、 line 7D、 line 8E、 line 10

考题 Given the following code:     public class Person{     int arr[] = new int[10];  public static void main(String a[]) {     System.out.println(arr[1]);     }     }  Which statement is correct?() A、 When compilation some error will occur.B、 It is correct when compilation but will cause error when running.C、 The output is zero.D、 The output is null.

考题 Given the following code:     public class Person{ static int arr[] = new int[10];  public static void main(String a[]) {     System.out.println(arr[1];)     }     }  Which statement is correct?()   A、 When compilation some error will occur.B、 It is correct when compilation but will cause error when running.C、 The output is zero.D、 The output is null.

考题 import java.awt.*;   public class Test extends Frame {   public Test() {   add(new Label(“Hello”) );   add(new TextField(“Hello”) );   add(new Button(“Hello”) );   pack();   show();    }   public static void main(String args) {   new Test ();   }   }   What is the result? () A、 The code will not compile.B、 A Window will appear containing only a Button.C、 An IllegalArgumentException is thrown at line 6.D、 A Window button will appear but will not contain the Label, TextField, or Button.E、 A Window will appear containing a Label at the top, a TextField below the Label, and a Button  below the TextField.F、 A Window will appear containing a Label on the left, a TextField to the right of the Label, and a button to the right of the TextField.

考题 Which code fragments will succeed in printing the last argument given on the command line to the standard output, and exit gracefully with no output if no arguments are given?()   CODE FRAGMENT a:   public static void main(String args[]) {   if (args.length != 0)   System.out.println(args[args.length-1]);   }   CODE FRAGMENT b:   public static void main(String args[]) {   try { System.out.println(args[args.length]); }   catch (ArrayIndexOutOfBoundsException e) {}   }   CODE FRAGMENT c:   public static void main(String args[]) {   int ix = args.length;   String last = args[ix];   if (ix != 0) System.out.println(last);   }   CODE FRAGMENT d:   public static void main(String args[]) {   int ix = args.length-1;   if (ix  0) System.out.println(args[ix]);   }   CODE FRAGMENT e:   public static void main(String args[]) {   try { System.out.println(args[args.length-1]);  }catch (NullPointerException e) {}   }  A、Code fragment a.B、Code fragment b.C、Code fragment c.D、Code fragment d.E、Code fragment e.

考题 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 Given the following code, write a line of code that, when inserted at the indicated location, will make the overriding method in Extension invoke the overridden method in class Base on the current object.   class Base {   public void print( ) {   System.out.println("base");   }   }   class Extention extends Base {   public void print( ) {   System.out.println("extension");   // insert line of implementation here   }   }   public class Q294d {   public static void main(String args[]) {   Extention ext = new Extention( );   ext.print( );   }   }   Fill in a single line of implementation.()

考题 单选题11.public class Counter{ 12.public static void main(String[]args){ 13.int numArgs=/*insert code here*/; 14.} 15.} and the command line:java Counter one fred 42 Which code,inserted at line 13,captures the number of arguments passed into the program?()A args.countB args.lengthC args.count()D args.length()E args.getLength()

考题 多选题Which declarations will allow a class to be started as a standalone program?()Apublic void main(String args[])Bpublic void static main(String args[])Cpublic static main(String[] argv)Dfinal public static void main(String [] array)Epublic static void main(String args[])

考题 多选题Which statements can be inserted at the indicated position in the following code to make the program write 1 on the standard output when run?()  public class Q4a39 {  int a = 1;   int b = 1;   int c = 1;   class Inner {   int a = 2;  int get() {   int c = 3;   // insert statement here  return c;   }   }  Q4a39() {   Inner i = new Inner();   System.out.println(i.get());  }   public static void main(String args[]) {   new Q4a39();   }   }Ac = b;Bc = this.a;Cc = this.b;Dc = Q4a39.this.a;Ec = c;

考题 单选题Given the following code:     public class Person{ static int arr[] = new int[10];  public static void main(String a[]) {     System.out.println(arr[1];)     }     }  Which statement is correct?()A  When compilation some error will occur.B  It is correct when compilation but will cause error when running.C  The output is zero.D  The output is null.

考题 单选题Which code fragments will succeed in printing the last argument given on the command line to the standard output, and exit gracefully with no output if no arguments are given?()   CODE FRAGMENT a:   public static void main(String args[]) {   if (args.length != 0)   System.out.println(args[args.length-1]);   }   CODE FRAGMENT b:   public static void main(String args[]) {   try { System.out.println(args[args.length]); }   catch (ArrayIndexOutOfBoundsException e) {}   }   CODE FRAGMENT c:   public static void main(String args[]) {   int ix = args.length;   String last = args[ix];   if (ix != 0) System.out.println(last);   }   CODE FRAGMENT d:   public static void main(String args[]) {   int ix = args.length-1;   if (ix  0) System.out.println(args[ix]);   }   CODE FRAGMENT e:   public static void main(String args[]) {   try { System.out.println(args[args.length-1]);  }catch (NullPointerException e) {}   }A Code fragment a.B Code fragment b.C Code fragment c.D Code fragment d.E Code fragment e.

考题 多选题Given the following code, which code fragments, when inserted at the indicated location, will succeed in making the program display a button spanning the whole window area?()   import java.awt.*;   public class Q1e65 {   public static void main(String args[]) {   Window win = new Frame();   Button but = new Button("button");   // insert code fragment here  win.setSize(200, 200);   win.setVisible(true);   }   }Awin.setLayout(new BorderLayout()); win.add(but);Bwin.setLayout(new GridLayout(1, 1)); win.add(but);Cwin.setLayout(new BorderLayout()); win.add(but, BorderLayout.CENTER);Dwin.add(but);Ewin.setLayout(new FlowLayout()); win.add(but);

考题 多选题package sun.scjp;  public enum Color { RED, GREEN, BLUE }  package sun.beta;  // insert code here  public class Beta {  Color g = GREEN;  public static void main( String[] argv)  { System.out.println( GREEN); }  }  The class Beta and the enum Color are in different packages.  Which two code fragments, inserted individually at line 2 of the Beta declaration, will allow this code to compile?()Aimport sun.scjp.Color.*;Bimport static sun.scjp.Color.*;Cimport sun.scjp.Color; import static sun.scjp.Color.*;Dimport sun.scjp.*; import static sun.scjp.Color.*;Eimport sun.scjp.Color; import static sun.scjp.Color.GREEN;

考题 单选题Given the following code:     public class Person{     int arr[] = new int[10];  public static void main(String a[]) {     System.out.println(arr[1]);     }     }  Which statement is correct?()A  When compilation some error will occur.B  It is correct when compilation but will cause error when running.C  The output is zero.D  The output is null.

考题 单选题import java.awt.*;   public class Test extends Frame {   public Test() {   add(new Label(“Hello”) );   add(new TextField(“Hello”) );   add(new Button(“Hello”) );   pack();   show();    }   public static void main(String args) {   new Test ();   }   }   What is the result? ()A  The code will not compile.B  A Window will appear containing only a Button.C  An IllegalArgumentException is thrown at line 6.D  A Window button will appear but will not contain the Label, TextField, or Button.E  A Window will appear containing a Label at the top, a TextField below the Label, and a Button  below the TextField.F  A Window will appear containing a Label on the left, a TextField to the right of the Label, and a button to the right of the TextField.

考题 单选题Which statements, when inserted at the indicated position in the following code, will cause a runtime exception when attempting to run the program?()   class A {}   class B extends A {}   class C extends A {}   public class Q3ae4 {   public static void main(String args[]) {   A x = new A();   B y = new B();   C z = new C();   // insert statement here   }   }A x = y;B z = x;C y = (B) x;D z = (C) y;E y = (A) y;

考题 单选题Given a class Repetition: 1.package utils; 2. 3.public class Repetition{ 4.public static String twice(Strings){returns+s;} 5.} and given another class Demo: 1.//insert code here2. 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 importutils.Repetition.*;D static importutils.Repetition.*;E import utils.Repetition.twice();F import static utils.Repetition.twice;G static import utils.Repetition.twice;