public class X {  public static void main (String[] args)  {  byte b = 127;  byte c = 126;  byte d = b + c;  }  }   Which statement is true?()  A、 Compilation succeeds and d takes the value 253.B、 Line 5 contains an error that prevents compilation.C、 Line 5 throws an exception indicating “Out of range”D、 Line 3 and 4 contain error that prevent compilation.E、 The compilation succeeds and d takes the value of 1.

public class X {  public static void main (String[] args)  {  byte b = 127;  byte c = 126;  byte d = b + c;  }  }   Which statement is true?()  

  • A、 Compilation succeeds and d takes the value 253.
  • B、 Line 5 contains an error that prevents compilation.
  • C、 Line 5 throws an exception indicating “Out of range”
  • D、 Line 3 and 4 contain error that prevent compilation.
  • E、 The compilation succeeds and d takes the value of 1.

相关考题:

执行下列代码段之后,变量b的值为______。 public class ex40 { public static void main(String[] args) { byte x=5; byte y=5; byte c=10; boolean b; b-c<x<<y; System.out.println (b); } }A.1B.0C.falseD.true

下列代码执行之后,输出的结果为______。 public class ex34 { public static void main(String[] args) { byte a=-128; byte b=(a|127)>0?(byte)(~a>>128:(byte)(~a<<128); System. out. Println(b); } }A.-128B.128C.127D.-127

1. class A {  2. public int getNumber(int a) {  3.     return a + 1;  4. }  5. }  6.    7. class B extends A {  8. public int getNumber (int a) {  9. return a + 2  10. }  11.    12. public static void main (String args[])  {  13. A a = new B();  14. System.out.printIn(a.getNumber(0));  15.    } 16. }     What is the result?()  A、 Compilation succeeds and 1 is printed.B、 Compilation succeeds and 2 is printed.C、 An error at line 8 causes compilation to fail.D、 An error at line 13 causes compilation to fail.E、 An error at line 14 causes compilation to fail.

class A {   public String toString () {   return “4”;   }   }   class B extends A {   8. public String toString () {   return super.toString() + “3”;   }   }   public class Test {   public static void main(Stringargs) {   System.out.printIn(new B());   }   }   What is the result?()  A、 Compilation succeeds and 4 is printed.B、 Compilation succeeds and 43 is printed.C、 An error on line 9 causes compilation to fail.D、 An error on line 14 causes compilation to fail.E、 Compilation succeeds but an exception is thrown at line 9.

public class test (    public static void main (String args) {    int i = 0xFFFFFFF1;  int j = ~i;   }    )   What is the decimal value of j at line 5?()A、 0B、 1C、 14D、 –15E、 An error at line 3 causes compilation to fail.F、 An error at line 4 causes compilation to fail.

1. public class Test {   2. public static void main (String args) {   3. unsigned byte b = 0;   4. b--;   5.   6. }   7. }   What is the value of b at line 5?()  A、 -1B、 255C、 127D、 Compilation will fail.E、 Compilation will succeed but the program will throw an exception at line 4.

package test1;  public class Test1 {  static int x = 42;  }  package test2;  public class Test2 extends test1.Test1 {  public static void main(String[] args) { System.out.println(“x = “ + x);  }  }  What is the result?() A、 x = 0B、 x = 42C、 Compilation fails because of an error in line 2 of class Test2.D、 Compilation fails because of an error in line 3 of class Test1.E、 Compilation fails because of an error in line 4 of class Test2.

1. class A {  2. public byte getNumber ()  {  3.   return 1;  4.   }  5. }  6.    7. class B extends A {  8. public short getNumber()  {  9.  return 2;  10. }  11.    12. public static void main (String args[]) {   13.    B  b = new B ();  14.      System.out.printIn(b.getNumber())     15.   }  16. }    What is the result?()  A、 Compilation succeeds and 1 is printed.B、 Compilation succeeds and 2 is printed.C、 An error at line 8 causes compilation to fail.D、 An error at line 14 causes compilation to fail.E、 Compilation succeeds but an exception is thrown at line 14.

class A {   public byte getNumber () {   return 1;   }   }   class B extends A {   public short getNumber() {   return 2;   }    public static void main (String args) {   B b = new B ();    System.out.printIn(b.getNumber())  }   }   What is the result?()  A、 Compilation succeeds and 1 is printed.B、 Compilation succeeds and 2 is printed.C、 An error at line 8 causes compilation to fail.D、 An error at line 14 causes compilation to fail.E、 Compilation succeeds but an exception is thrown at line 14.

package foo;  import java.util.Vector; private class MyVector extends Vector {  int i = 1;  public MyVector() {  i = 2; } }  public class MyNewVector extends MyVector {  public MyNewVector() {  i = 4;  }  public static void main(String args[]) {  MyVector v = new MyNewVector();  }  }  What is the result?()A、 Compilation succeeds.B、 Compilation fails because of an error at line 5.C、 Compilation fails because of an error at line 6.D、 Compilation fails because of an error at line 14.E、 Compilation fails because of an error at line 17.

1. class A {  2. public String toString ()  {  3. return “4”;  4. }  5. }  6. class B extends A {  7. public String toString ()   {  8. return super.toString()  + “3”;  9. }  10. }  11. public class Test {  12.   public static void main(String[]args)  {  13.      System.out.printIn(new B());  14.      }  15. }    What is the result?()  A、 Compilation succeeds and 4 is printed.B、 Compilation succeeds and 43 is printed.C、 An error on line 9 causes compilation to fail.D、 An error on line 14 causes compilation to fail.E、 Compilation succeeds but an exception is thrown at line 9.

1.public class test (  2.public static void main (String args[])    {  3.int  i = 0xFFFFFFF1;  4.int  j = ~i;  5.    6.}  7.)    What is the decimal value of j at line 5?()  A、 0B、 1C、 14D、 –15E、 An error at line 3 causes compilation to fail.F、 An error at line 4 causes compilation to fail.

class A {  public byte getNumber() {  return 1;  }  }  class B extends A {  public short getNumber() {  return 2;  }  public static void main(String args[]) {  B b = new B();  System.out.println(b.getNumber()); }  }   What is the result?()A、 1B、 2C、 An exception is thrown at runtime.D、 Compilation fails because of an error in line 8.E、 Compilation fails because of an error in line 14.

public class Test {  public static void replaceJ(string text)  {  text.replace (‘j’, ‘l’);  }  public static void main(String args[])  {  string text = new String (“java”)  replaceJ(text);  system.out.printIn(text);  }  }      What is the result?()  A、 The program prints “lava”B、 The program prints “java”C、 An error at line 7 causes compilation to fail.D、 Compilation succeeds but the program throws an exception.

Given classes defined in two different files:  1. package util;  2. public class BitUtils {  3. public static void process(byte[]) { /* more code here */ }  4. }  1. package app;  2. public class SomeApp {  3. public static void main(String[] args) {  4. byte[] bytes = new byte[256];  5. // insert code here  6. }  7. }  What is required at line 5 in class SomeApp to use the process method of BitUtils?() A、 process(bytes);B、 BitUtils.process(bytes);C、 util.BitUtils.process(bytes);D、 SomeApp cannot use methods in BitUtils.E、 import util.BitUtils.*; process(bytes);

1. class A {  3. public String to String() {  4. return “4”;  5. }  6. }  7. class B extends A {  8. public String toString() { 9. return super.toString() + “3”;  10. }  11. }  12. public class Test {  13. public static void main (String[] args) {  14. System.out.printIn(new B()); 15. }  16. }   What is the result( )?   A、 Compilation succeeds and 4 is printed.B、 Compilation …………… is printed.C、 An error on line 9 cause compilation to fail.D、 An error on line 14 cause compilation to fail.E、 Compilation succeeds but an exception is thrown at line 9.

1. interface TestA { String toString(); }  2. public class Test {  3. public static void main(String[] args) {  4. System.out.println(new TestA() {  5. public String toString() { return “test”; }  6. }  7. }  8. }  What is the result?() A、 testB、 nullC、 An exception is thrown at runtime.D、 Compilation fails because of an error in line 1.E、 Compilation fails because of an error in line 4.F、 Compilation fails because of an error in line 5.

class A {   public int getNumber(int a) {   return a + 1;   }   }    class B extends A {   public int getNumber (int a) {   return a + 2   }    public static void main (String args) {   A a = new B();   System.out.printIn(a.getNumber(0));   }   }   What is the result? () A、 Compilation succeeds and 1 is printed.B、 Compilation succeeds and 2 is printed.C、 An error at line 8 causes compilation to fail.D、 An error at line 13 causes compilation to fail.E、 An error at line 14 causes compilation to fail.

interface foo {   int k = 0;   }    public class test implements Foo (   public static void main(String args) (    int i;   Test test = new test ();   i= test.k;   i= Test.k;   i= Foo.k;   )   )   What is the result? ()A、 Compilation succeeds.B、 An error at line 2 causes compilation to fail.C、 An error at line 9 causes compilation to fail.D、 An error at line 10 causes compilation to fail.E、 An error at line 11 causes compilation to fail.

单选题class A {  public byte getNumber() {  return 1;  }  }  class B extends A {  public short getNumber() {  return 2;  }  public static void main(String args[]) {  B b = new B();  System.out.println(b.getNumber()); }  }   What is the result?()A 1B 2C An exception is thrown at runtime.D Compilation fails because of an error in line 8.E Compilation fails because of an error in line 14.

单选题interface foo {   int k = 0;   }    public class test implements Foo (   public static void main(String args) (    int i;   Test test = new test ();   i= test.k;   i= Test.k;   i= Foo.k;   )   )   What is the result? ()A Compilation succeeds.B An error at line 2 causes compilation to fail.C An error at line 9 causes compilation to fail.D An error at line 10 causes compilation to fail.E An error at line 11 causes compilation to fail.

单选题1. public class Test {   2. public static void main (String args) {   3. unsigned byte b = 0;   4. b--;   5.   6. }   7. }   What is the value of b at line 5?()A -1B 255C 127D Compilation will fail.E Compilation will succeed but the program will throw an exception at line 4.

单选题public class X {   public static void main (String args) {   byte b = 127;   byte c = 126;   byte d = b + c;   }   }   Which statement is true?()A Compilation succeeds and d takes the value 253.B Line 5 contains an error that prevents compilation.C Line 5 throws an exception indicating “Out of range”D Line 3 and 4 contain error that prevent compilation.E The compilation succeeds and d takes the value of 1.

单选题package foo;  import java.util.Vector; private class MyVector extends Vector {  int i = 1;  public MyVector() {  i = 2; } }  public class MyNewVector extends MyVector {  public MyNewVector() {  i = 4;  }  public static void main(String args[]) {  MyVector v = new MyNewVector();  }  }  What is the result?()A Compilation succeeds.B Compilation fails because of an error at line 5.C Compilation fails because of an error at line 6.D Compilation fails because of an error at line 14.E Compilation fails because of an error at line 17.

单选题public class test (    public static void main (String args) {    int i = 0xFFFFFFF1;  int j = ~i;   }    )   What is the decimal value of j at line 5?()A 0B 1C 14D –15E An error at line 3 causes compilation to fail.F An error at line 4 causes compilation to fail.

单选题package test1;  public class Test1 {  static int x = 42;  }  package test2;  public class Test2 extends test1.Test1 {  public static void main(String[] args) { System.out.println(“x = “ + x);  }  }  What is the result?()A x = 0B x = 42C Compilation fails because of an error in line 2 of class Test2.D Compilation fails because of an error in line 3 of class Test1.E Compilation fails because of an error in line 4 of class Test2.

单选题class A {   public String toString () {   return “4”;   }   }   class B extends A {   8. public String toString () {   return super.toString() + “3”;   }   }   public class Test {   public static void main(Stringargs) {   System.out.printIn(new B());   }   }   What is the result?()A Compilation succeeds and 4 is printed.B Compilation succeeds and 43 is printed.C An error on line 9 causes compilation to fail.D An error on line 14 causes compilation to fail.E Compilation succeeds but an exception is thrown at line 9.