更多"请在划线处编写适当语句,完成此程序使它能正确执行。 import j"的相关试题:
[填空题]请在划线处编写适当语句,完成此程序使它能正确执行。
import java.io.*;
public class Leap Year
public static void main (String arget[]) throws IOException
InputStreamReader ir;
BufferedReader in;
ir=new Input Stream Reader (System.in);
in=new BufferedReader(ir);
System.out.println(“输入年份是:”):
String s=in.readLine( );
int year=Integer.parseInt(s);
System.out.println(" "+ year+“年是闰年。”);
else
System.out.println(" " +year+“年不是闰年。”);
[填空题]下列程序可完成求1至100之间的整数的和的功能。请在划线处编写适当语句,使此程序能正确执行。
public class Sum
public static void main(string args[])
int sum=0;
for(int i=1;i<=100;i++)
【13】 ;
System.out.println("sum="+sum);
[填空题]通过参数定制Applet,请在下划线处编写适当语句 【15】 ,使程序能正确运行。
para_duke.html
<HTML>
<HEAD>
<TITLE> A Simple Program </TITLE>
</HEAD>
<BODY>
<applet code = DrawAny.class width = 100 height = 100 align = bottom>
<param name = image value = "duke.gif">
</applet>
</BODY>
</HTML>
DrawAny.java
import java.awt.*;
import java.applet.*;
import java.net. URL;
public class DrawAny extends Applet
{
Image im;
public void init( )
{
URL url = getDocumentBase( );
String imageName = getParameter("image");
______;
}
public void paint(Graphics g)
{
g.drawImage(im,0,0,this);
}
}
[填空题]通过参数定制Applet,请在下划线处编写适当语句 【15】 ,使程序能正确运行。
para_duke.html
<HTML>
<HEAD>
<TITLE> A Simple Program </TITLE>
</HEAD>
<BODY>
<applet code = DrawAny.class width = 100 height = 100 align = bottom>
<param name = image value = "duke.gif">
</applet>
</BODY>
</HTML>
DrawAny.java
import java.awt.*;
import java.applet.*;
import java.net. URL;
public class DrawAny extends Applet
Image im;
public void init( )
URL url = getDocumentBase( );
String imageName = getParameter("image");
______;
public void paint(Graphics g)
g.drawImage(im,0,0,this);
[填空题]通过参数定制Applet,请在下划线处编写适当语句工 【15】 ,使程序能正确运行。
para_duke.html
<HTML>
<HEAD>
<TITLE> A Simple Program </TITLE>
</HEAD>
<BODY>
<applet code = DrawAny.class width = 100 height = 100 align = bottom>
<param name = image value = "duke.gif">
</applet>
</BODY>
</HTML>
DrawAny.java
import java.awt.*;
import java.applet.*;
import java.net.URL;
public class DrawAny extends Applet
Image im;
public void init( )
URL url = getDocumentBase( );
String imageName = getParameter("image");
public void paint(Graphics g)
g.drawImage(im,0,0,this);
[填空题]下列程序编译错误,是由于划线处缺少某个语句,该语句是 【15】 。
#include <iostream. h>
class A
{
______
private:
int numl;
public:
A( ):numl(0){}
A(int i):numl(i){}
};
class B
{
private:
int num2
public:
B( ):num2(0){}
B(int i):num2(i){}
int my_math(A obj1,B obj2);
};
int B::my_math(A obj1,B obj2)
}
return (obj1.num1+obj2.num2);
}
void main(void)
{
A obj1 (4)
B obj,obi2(5);
cout <<"obj1+obj2:"<<obj.my_math(obj1,obj2);
}
[填空题]下列程序编译错误,是由于划线处缺少某个语句,该语句是 【15】 。
#include <iostream. h>
class A
______
private:
int numl;
public:
A( ):numl(0)
A(int i):numl(i)
;
class B
private:
int num2
public:
B( ):num2(0)
B(int i):num2(i)
int my_math(A obj1,B obj2);
;
int B::my_math(A obj1,B obj2)
return (obj1.num1+obj2.num2);
void main(void)
A obj1 (4)
B obj,obi2(5);
cout <<"obj1+obj2:"<<obj.my_math(obj1,obj2);
[填空题]下列程序编译错误,是由于划线处缺少某个语句,该语句是______。
#include<iostream.h>
class A
private:
int numl;
public:
A( ):numl(0)
A(int i):numl(i)
;
class B
private:
int num2;
public:
B( ):num2(0)
B(int i):num2(i)
int my_math(A obj1, B obj2);
;
int B::my_math(A obj1,B obj2)
return(obj1.numl+obj2.num2);
void main(void)
A objl(4);
B obj,obj2(5);
cout<<"obj1+obj2:"<<obj.my_math(obj1,obj2);
[单项选择]在下列程序的划线处应填入的语句是 ( )
class Person
private int a;
public class Man extends Person
public int b
public static void main(String arg[])
Person P=new Person( );
Man t=new Man( );
int i;
______
A. i=w;
B. i=b;
C. i=p.a;
D. i=t,b;
[单项选择]在下列程序的划线处应填入的语句是( )。 class Person private int a: public class Man extends Person public int b; public static void main(String arg []) Person p=newPerson( ); Man t=new Man( ); int i; _________________
A. i=w;
B. i=b;
C. i=P.a;
D. i=t.b;
[单项选择]在下列程序的划线处应填入的语句是
class Person
private int a;public class Man extends Person
public int b;
public static void main (String arg [])
Person p=new Person( );
Man t=new Man( );
int i:
A. i=w;
B. i=b
C. i=p.a;
D. i=t.b;
[单项选择]下列程序中划线处正确的语句是( )。
# include <iostream>
using namespace std;
class Base
public:
void fun( )cout<<"Base:: fun" <<endl;
;
class Derived:public Base
void fun( )
______ ∥显式调用基类的函数fun( )
cout<<"Derived:: fun"<<endl;
;
A. fun();
B. Base.fun();
C. Base::fun();
D. Base- >fun();
[单项选择]为完成下面的程序,应在划线处填入的语句是
#include<iostream>
using namespace std;
class Base
private:
int x;
public:
Base(int i)
x=i;
~Base( )
;
class Derived:public Base
public:
______ //完成类Derive构造函数的定义
;
int main( )
Derived obj;
return 0;
A. Derived(inti):Base(i)
B. Derived()
C. Void Derived (inti):Base(i)
D. Denved(inti)Base(i);
[单项选择]下列程序中,划线处正确的语句是( )。
#include<iostream.h>
Class Base
Public:
Void fun( )cout<<"Base::fun"<<endl;
;
Class Derived:public Base
void fun( )
______ //显示调用基类的函数fun( )
Cout<<"Derived::fun"<<endl;
;
A. fun()
B. Base.fun()
C. Base::fun()
D. Base->fun();
[单项选择]下列程序中,划线处正确的语句是( )。
#include<iostream.h>
Class Base
Public:
Void fun( )cout<<"Base::fun"<<endl;
;
Class Derived:public Base
void fun( )
______ //显示调用基类的函数fun( )
Cout<<"Derived::fun"<<endl;
;
A. fun()
B. Base.fun()
C. Base::fun()
D. Base->fun();
[单项选择]为完成下面的程序,应在划线处填入的语句是( )。
#include <iostream>
using namespace std;
class Base
private:
int x;
public:
Base(int i)
x=i;
~Base( )
;
class Derived : public Base
public:
_______________ //完成类Derive构造函数的定义
;
int main( )
Derived Obj;
return 0;
A. Derived(inti):Base(i)
B. Derived()
C. voidDerived(inti):Base(0)
D. Derived(inti)Base(i);