int foo() { /* more code here */ }
void foo() { /* more code here */ }
public void foo() { /* more code here */ }
private void foo() { /* more code here */ }
protected void foo() { /* more code here */ }
第1题:
There are students in Class One than in Class Two.
A、 many
B、 more
C、 most
答案:B
解析:本句意思:一班的学生比二班的多,句子中than说明两项内容进行比较,所以用比较级,而选项A是原级,选项C是最高级,所以应选B
第2题:
类clasg one在声明func成员函数时发生错误,出错原因是______。
class one
private:
int a;
public:
void func(two&);
};
class two
{
private:
int b;
friend vold one::func(two&);
};
void one::func(two&r)
{
a=r.b;
}
第3题:
关于下列代码编译或执行结果的描述中,正确的是( )。 public class Test{ public static void main(String argsE]){ TcstThread pml=new TestThread("One") pml.start; TestThread pm2=new TestThread("Tw0") pm2.start; } } class TestThread extends Thread( private String sTname=""; TestThread(String s){ sTname=s; } public void run{ for(int i=O;i<2;i++){ try{ sleep(1000); }catch(InterruptedException e){} system.out.print(sTname+""); } } }
A.不能通过编译,TestThread类中不能定义变量和构造方法
B.输出One One Two Two
C.输出Two One One Two
D.选项B或C都有可能出现
第4题:
class One { public One() { System.out.print(1); } } class Two extends One { public Two() { System.out.print(2); } } class Three extends Two { public Three() { System.out.print(3); } } public class Numbers{ public static void main( String[] argv) { new Three(); } } What is the result when this code is executed?()
第5题:
In which two cases does the compiler supply a default constructor for class A?()
第6题:
interface Data { public void load(); } abstract class Info { public abstract void load(); } Which class correctly uses the Data interface and Info class?()
第7题:
class One { public One foo() { return this; } } class Two extends One { public One foo() { return this; } } class Three extends Two { // insert method here } Which two methods, inserted individually, correctly complete the Three class?()
第8题:
10. interface Foo {} 11. class Alpha implements Foo {} 12. class Beta extends Alpha {} 13. class Delta extends Beta { 14. public static void main( String[] args) { 15. Beta x = new Beta(); 16. // insert code here 17. } 18. } Which code, inserted at line 16, will cause a java.lang.ClassCastException?()
第9题:
public void foo() { /* more code here */ }
private void foo() { /* more code here */ }
protected void foo() { /* more code here */ }
int foo() { /* more code here */ }
void foo() { /* more code here */ }
第10题:
public class Circle implements Shape { private int radius; }
public abstract class Circle extends Shape { private int radius; }
public class Circle extends Shape { private int radius; public void draw(); }
public abstract class Circle implements Shape { private int radius; public void draw(); }
public class Circle extends Shape { private int radius;public void draw() {/* code here */} }
public abstract class Circle implements Shape { private int radius;public void draw() { / code here */ } }
第11题:
1
3
123
321
The code rims with no output.
第12题:
public void foo() { }
public int foo() { return 3; }
public Two foo() { return this; }
public One foo() { return this; }
public Object foo() { return this; }
第13题:
有如下程序:
include <iostream>
using namespace std;
class ONE
{
public:
virtual void f() { cout << "1"; }
};
class TWO: public ONE
{
public:
TWO() { cout << "2"; }
};
class THREE: public TWO
{
public:
virtual void f() {TWO::f(); cout << "3"; }
};
int main()
{
ONE aa, *p;
TWO bb;
THREE cc;
p=&cc;
P->f();
return 0;
}
执行上面程序的输出是【 】。
第14题:
有下列程序:
include<iostream>
using namespace std;
class ONE
{
public:
virtual void f(){COUt<<"1";}
};
c1assTWO:public ONE
{
public:
TWO(){cout<<"2";}
};
class THREE:public TWO
{
pub
第15题:
类class one 在声明func 成员函数时发生错误,出错原因是【 】。
Class one
{
private:
int a;
public:
void func(two& )
};
class two
{
private:
int b;
friend void one: :func(two & );
};
void one: : func(two& r)
a=r.b;
}
第16题:
public class SomeException { } Class a: public class a { public void doSomething() { } } Class b: public class b extends a { public void doSomething() throws SomeException { } } Which is true about the two classes?()
第17题:
class One { void foo() {} } class Two extends One { //insert method here } Which three methods, inserted individually at line 14, will correctly complete class Two?()
第18题:
现有: import java.util.*; class AddStuff2 { public static void main(String [] args) { TreeSet
第19题:
public class Test { public static void main(String args[]) { class Foo { public int i = 3; } Object o = (Object)new Foo(); Foo foo = (Foo)o; System.out.println(“i = “ + foo.i); } } What is the result?()
第20题:
Given: 10. class One { 11. void foo() { } 12. } 13. class Two extends One { 14. //insert method here 15. } Which three methods, inserted individually at line 14, will correctly complete class Two?()
第21题:
so many
so much
more
much more
第22题:
Since the method foo() does not catch the exception generated by the method baz(), it must declare the RuntimeException in its throws clause.
A try block cannot be followed by both a catch and a finally block.
An empty catch block is not allowed.
A catch block cannot follow a finally block.
A finally block must always follow one or more catch blocks.
第23题:
Cause error during compilation.
south east
south to north east to west
south to north east
south east to west