更多"下列代码的下画线处应填入的方法名是______。 import ja"的相关试题:
[单项选择]下面程序的功能是将一个整数数组写入二进制文件。在下画线处应填入的选项是 import java.io.*; public class XieShuzu { public static void main(String[] a) { int[]myArray={10,20,30,40}; try { DataoutputStream dos=new DataOutputStream(new FileoutputStream("ints.dat")); for(int i=0;i<myArray.1ength;i++)dos.______(myArray[i]); dos.close( ); System.out.println("已经将整数数组写入二进制文件:ints.dat"); } catch(IOException ice) { System.out.println("IO Exception"); } } }
A. writeArray
B. writeByte
C. writeInt
D. writeDouble
[填空题]下面程序构造了一个Swing Applet,在下画线处填入正确的代码。
import javax.swing.*;
import java.awt.*;
public class SwingApplet extends ______
JLabel 1=new JLabel("This is a Swing Applet.");
public void init( )
Container contentPane=getContentPane( );
contentPane.add(1);
[填空题]下列程序构造了一个Swing Applet,请在下画线处填入正确的代码:
import javax.swing.*;
importt java.awt.*;
public class SwingApplet extends______
JLabel 1=new JLabel(’This is a Swing Applet.’);
public void init( )
Container eontentPane=getContentPane( );
contentPane.add(1);
[填空题]在下面Java Applet程序的下画线处填入代码,使程序完整并能够正确运行。
import java.applet.*;
import java.awt.*;
public class HelloWorld ______ {
public void paint(Graphics g) {
g.drawString("Hello World!",25,25);
}
}
[填空题]在下列Java Applet程序的下画线处填入代码,使程序完整并能够正确运行。
import java.applet.*;
import java.awt.*;
public class HelloWorld______
public void paint(Graphics g)
g.drawString("Hello World!",25,25);
[填空题]在下面Java Applet程序的下画线处填入代码,使程序完整并能够正确运行。
import java.applet.*;
import java.awt.*;
public class HelloWorld ______
public void paint(Graphics g)
g.drawString("Hello World!",25,25);
[单项选择]在下列代码的下面线处应填入的内容是______。
public class FirstSample
public static void main(______args[])
System. out. println("你好!");
A. staff
B. double
C. int
D. String
[单项选择]下列程序创建了一个线程并运行,横线处应填入的正确代码是______。
public class Try extends Thread
public static void main(String args[])
Thread t=flew Try( );
______;
public void run( )
System. out. println("Try!");
A. t. start
B. t. class
C. t. thread
D. t. static
[单项选择]要得到某日录下的所有文件名,在下列代码的下面线处应填入的内容是(两个下面线的填写内容相同)______。
______pathName=new______(args[0]);
String[] fileNames=pathName. list( );
A. FilelnputStream
B. FileOutputStream
C. File
D. RandomAccessFile
[单项选择]下列程序中横线处应填入的语句是( )。
classBase
{
public:
voidfun(){cout<<"Baseoffun"< classDerived:publicBase
{
voidfun()
{
//显示基类的成员函数fun
cout<<"Derivedoffun"< }
};
A. fun();
B. Base.fun();
C. Base::fun();
D. Base->fun();
[单项选择]下列程序中画线处应填入的语句是
classBase
public:
voidfun( )COUt<<"Baseoffun"<<endl;
;
classDerived:publicBase
voidfun( )
_______//显示基类的成员函数fun
cout<<"Derivedoffun"<<endl;
;
A. fun( );
B. Base.fun( );
C. Base::fun( );
D. Base->fun( );
[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]下列程序中下画线处应填入的语句是
class Base
{
public:
void fun( ) {cout < < "Baseoffun" < < endl;}
};
class Derived:public Base
{
void fun( )
{
______//显示基类的成员函数fun
cout < < "Derived of fun" < < endl;
}
};
A) fun( ) ; B) Base. fun( ) ;
C) Base: :fun( ) ; D) Base->fun( ) ;
[单项选择]下列程序中下画线处应填入的语句是
class Base
public:
void fun( ) cout < < "Baseoffun" < < endl;
;
class Derived:public Base
void fun( )
______//显示基类的成员函数fun
cout < < "Derived of fun" < < endl;
;
A) fun( ) ; B) Base. fun( ) ;
C) Base: :fun( ) ; D) Base->fun( ) ;
[单项选择]下列程序中横线处应填入的语句是( )。
class Base
public:
vold fun( )cout<<"Base of fun"<<endl;
;
class Derived:public Base
void fun( )
//显示基类的成员函数fun
cout<<"Derived of fun"<<endl;
;
A. fun();
B. Base.fun();
C. Base::fun();
D. Base->fun();
[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;