更多"请在下面代码中加入监听器语句。
importjava.awt.*;"的相关试题:
[填空题]请在下面代码中加入监听器语句。
importjava.awt.*;
importjava.applet.Applet;
publicclassSimpleextendsAppleimplementsMouseListener
StringBuffer;
publicvoidinit( )
//监听器语句
buffer=newStringBuffer( );
addltem(“initializing…”);
publicvoidmoseEntered(MouseEventevent)
publicvoidmoseExited(MouseEventevent)
publicvoidmosePressed(MouseEventevent)
publicvoidmoseReleased(MouseEventevent)
publicvoidmoseClicked(MouseEventevent)
addltem(“click!…”);
[填空题]请在下面代码中加入监听器语句 【15】 。
import java.awt.*;
import java.applet.Applet;
public class Simple extends Applet implements MouseListener
StringBuffer;
Public void init( )
______//加监听器语句
buffer = new StringBuffer( );
addItem("initializing..... ");
Public void moseEntered(MouseEvent event)
Public void moseExited(MouseEvent event)
Public void mosePressed(MouseEvent event)
Public void moseReleased(MouseEvent event)
Public void moseClicked(MouseEvent event)
addItem ("click!...");
[填空题]请在下面代码中加入监听器语句。
import java.awt.*;
import java.applet.Applet;
public class Simple extends Apple implements MouseListener
StringBuffer;
public void init( )
//监听器语句
buffer=new StringBuffer( );
addItem("initializing…");
public void moseEntered(MouseEvent event)
public void moseExited(MouseEvent event)
public void mosePressed(MouseEvent event)
public void moseReleased(MouseEvent event)
public void moseClicked(MouseEvent event)
addltem("click!…");
[单项选择]下面的语句中错误的是
A. int a=5; int x[a];
B. const int a=5; int x[a];
C. int n=5; int *p=new int [a];
D. const int n=5; int *p=new int [a];
[填空题]阅读下面代码
int x=3;
while (x<9)x+=2;
x++:
while语句成功执行的次数是______。
[填空题]请在代码中的画线处填写正确的语句 【16】 ,使程序输出hello world!。
//HelloApplet.java
Import java.awt.*;
Import java.applet.*;
Public class HelloApplet extends
{
Public void paint(Graphics g)
{
_______ ("hello world! ",20,20);
}
}
[填空题]请在代码中的画线处填写正确的语句 【16】 ,使程序输出hello world!。
//HelloApplet.java
Import java.awt.*;
Import java.applet.*;
Public class HelloApplet extends
Public void paint(Graphics g)
______ ("hello world!",20,20);
[简答题]下面的程序是用do_while语句计算10的阶乘。请在程序的每条横线处填写一个语句,使程序的功能完整。
注意:请勿改动main( )主方法和其他已有的语句内容,仅在横线处填入适当的语句。
public class DoWhileLoop{
public static void main(______) {
int n=10;
long result=1
do
{
______
{
______
System. out. println("10的阶乘为:"+result);
}
}
[简答题]下面的程序是用do-while语句计算10的阶乘。请在程序的每条横线处填写1个语句,使程序的功能完整。
注意:请勿改动main( )主方法和其他已有的语句内容;仅在横线处填入适当的语句。
源程序文件代码清单如下:
public class DoWhileLoop
public static void main(______)
int n=10;
long result=1;
do
_____;
_____;
System.out.println("10的阶乘为:"+result);