Java By Example PHẦN 8 pptx
Java By Example PHẦN 8 pptx
... face it,
applets are way cooler.
Listing 28. 5 ConnectApplet2 .java: A "Favorite URLs" Applet.
import java. awt.*;
import java. applet.*;
import java. net.*;
public class ConnectApplet2 extends ... source code in a file with the .java extension. Then you use the Java compiler, javac,
to compile the source code into byte-code form. Just like a normal class, the byte-code fil...
giáo trình Java By Example phần 8 ppt
... which is one of the many exceptions defined by Java. To
do this, use the try and catch program blocks, as shown in Listing 28. 1.
Listing 28. 1 LST 28_ 1.TXT: Handling URL Exceptions.
try
{
URL ... source code in a file with the .java extension. Then you use the Java compiler, javac,
to compile the source code into byte-code form. Just like a normal class, the byte-code file will have...
Java By Example PHẦN 6 pptx
... add new text.
Figure 20 .8 : TextAreaApplet applet run-ning under Appletviewer.
Listing 20.6 TEXTAREAAPPLET .JAVA: The TextAreaApplet Applet.
import java. awt.*;
import java. applet.*;
public class ... mode.
Example: Using a Scrolling List in an Applet
By now, you've gotten used to working with the list of musical artists that I've used in the previous few
examples. In this...
programming XML by Example phần 8 pptx
... code than Java or JavaScript
code, anyway. You really need not worry about complex concepts in Java.
✔ If you are not familiar with Java but you would like to learn enough Java to run the
examples, ... MerchantCollection .java
package com.psol.xcommerce;
import java. io.*;
import java. util.*;
import org.w3c.dom.*;
import javax.servlet.*;
import javax.servlet.http.*;
393
The Middle...
giáo trình Java By Example phần 5 ppt
... Canvas●
Example: Using the Coordinate System●
Drawing Shapes●
Example: Drawing a Rectangle●
Example: Drawing Other Shapes●
Understanding the ShapeApplet Applet
Drawing Ovals❍
Drawing Arcs❍
Example: ... sixth argument of 180 tells Java to draw around the arc 180 degrees (or halfway around the
full 360 degrees). It doesn't mean that the ending point should be at the 180 -degree po...
giáo trình Java By Example phần 10 pps
... source is a string.
Example: Reading a File
There are many ways to read files using Java& apos;s I/O classes. The most basic, however, is to read a file
byte -by- byte. Suppose, for example, you wanted ... String str = " ;Java Version: " +
System.getProperty(" ;java. version");
System.out.println(str);
str = " ;Java Class Path: " +
System.getProperty("...
giáo trình Java By Example phần 9 ppt
... the original Java- compatible Web browser.
java
This is the Java interpreter, which runs applets and
applications by reading and interpreting byte-code .CLASS
files.
javac
This is the Java compiler, ... Here's an example of
using these options from the command line.
javadoc -classpath c:\classes -d c:\classes -verbose arcapplet .java
Using the Disassembler
The javap tool is...
giáo trình Java By Example phần 7 docx
... do-while Loops
CONTENTS
The while Loop
Example: Using a while Loop❍
Example: Using a while Loop in a Program❍
●
The do-while Loop
Example: Using a do-while Loop❍
Example: Using a do-while Loop in ... for Loop●
Example: Using a for Loop●
Example: Using a for Loop in a Program●
Changing the Increment Value●
Example: Looping with Different Increments●
Using Variables in Loops●
Exampl...
giáo trình Java By Example phần 6 pps
... For example, your computer can move a byte value, which consumes only
eight bits of memory, much faster than an int value, which, in Java, is four times as large.
In Java, you declare a byte ... float and double data types shows up. In
Java, a value declared as float can hold a number in the range from around -3.40 282 3 x 10 38 to
around 3.40 282 3 x 10 38. These types of values are als...
giáo trình Java By Example phần 4 pot
... Checkbox("The Adventures of Javaman", group, true);
checkbox2 =
new Checkbox(" ;Java by Example& quot;, group, false);
checkbox3 =
new Checkbox(" ;Java and the Single Guy", ... Checkbox("The Adventures of Javaman", null, false);
checkbox2 =
new Checkbox(" ;Java by Example& quot;, null, false);
checkbox3 =
new Checkbox(" ;Java and the Sing...