Java安裝配置
下載和安裝
環境變量
JAVA_HOME爲JDK所在路徑,如:JAVA_HOME=D:/java/jdk1.5.0
PATH後面加上“;%JAVA_HOME%/bin”。
Java 應用程序
Welcome.java文件如下:
public class Welcome{
public static void main( String args[] )
{
System.out.println( "Welcome to Java Programming!" );
}
}
public static void main( String args[] )
{
System.out.println( "Welcome to Java Programming!" );
}
}
編譯:
javac Welcome.java
運行:
java Welcome
Java applet
WelcomeApplet.java:
import javax.swing.JApplet; // import class JApplet
import java.awt.Graphics; // import class Graphics
public class WelcomeApplet extends JApplet {
public void paint( Graphics g )
{
g.drawString( "Welcome to Java Programming!", 25, 25 );
}
}
import java.awt.Graphics; // import class Graphics
public class WelcomeApplet extends JApplet {
public void paint( Graphics g )
{
g.drawString( "Welcome to Java Programming!", 25, 25 );
}
}
WelcomeApplet.html:
<html>
<applet code="WelcomeApplet.class" width=300 height=30>
</applet>
</html>
<applet code="WelcomeApplet.class" width=300 height=30>
</applet>
</html>
編譯:
javac WelcomeApplet.java
運行:
appletviewer WelcomeApplet.html
也可用瀏覽器打開。