锘??xml version="1.0" encoding="utf-8" standalone="yes"?>久久精品无码一区二区三区,日韩精品福利视频,亚洲欧美一区二区在线观看http://www.aygfsteel.com/jujunchen/category/40491.htmlJAVA SERVER PAGESzh-cnThu, 23 Jul 2009 08:18:58 GMTThu, 23 Jul 2009 08:18:58 GMT60- java綾誨瀷寮哄埗杞崲http://www.aygfsteel.com/jujunchen/archive/2009/07/22/287933.htmlC楦¢浮C楦¢浮Wed, 22 Jul 2009 15:44:00 GMThttp://www.aygfsteel.com/jujunchen/archive/2009/07/22/287933.htmlhttp://www.aygfsteel.com/jujunchen/comments/287933.htmlhttp://www.aygfsteel.com/jujunchen/archive/2009/07/22/287933.html#Feedback0http://www.aygfsteel.com/jujunchen/comments/commentRss/287933.htmlhttp://www.aygfsteel.com/jujunchen/services/trackbacks/287933.html闂錛?/span>
class A{
int sum;
}
class B extends A{
double sum;
public static void main(String args[]){
A a=new A();
B b=new B();
b=(A)a;//寮傚父錛熻鏁檞hy?
}
}
鍥炵瓟錛?br />
褰㈣薄涓鐐硅錛?br />
class 浜簕
int sum;
}
class 鐢蜂漢 extends 浜簕
double sum;
public static void main(String args[]){
浜?a=new 浜?);
鐢蜂漢 b=new 鐢蜂漢();
b=(鐢蜂漢)a;
}
}
浣犺兘鎶?#8220;浜?#8221;寮哄埗杞崲鎴?#8220;鐢蜂漢”鍚楋紵錛熷緢鏄劇劧涓嶈兘
鎵璋?#8220;鐖剁被鍚戝瓙綾昏漿鎹㈡槸寮哄埗杞崲”鏄寚榪欑鎯呭喌
A a=new B();
B b=(B)a;
姝ゆ椂a瀹為檯涓婃槸涓涓狟鐨勫疄渚嬶紝浣嗚瀹氫箟涓篈錛岃繖鏍峰氨鏃犳硶璋冪敤B涓畾涔夌殑鏂規硶錛屽彧鏈夊湪寮哄埗杞崲涓築鐨勫疄渚嬪悗鎵嶈兘璋冪敤B涓畾涔夌殑鏂規硶鈥斺斿墠鎻愭槸錛歛鏄疊鐨勫疄渚?br />
濡傛灉鏄?br />
A a=new A();
B b=new B();
b=(A)a;
a鏈韓鏄疉鐨勫疄渚嬶紝涓嶅叿鏈塀鐨勭壒寰侊紝涓嶅彲鑳借漿鎹負B鐨勫疄渚嬨?br />
榪欏氨鍍忎綘涓嶈兘
Object obj=new Object();
String str = (String)obj;

]]>- 鐢↗AVA鐢熸垚鍥劇墖鐨勭畝鍗曚緥瀛?/title>http://www.aygfsteel.com/jujunchen/archive/2009/06/27/284386.htmlC楦¢浮C楦¢浮Sat, 27 Jun 2009 04:19:00 GMThttp://www.aygfsteel.com/jujunchen/archive/2009/06/27/284386.htmlhttp://www.aygfsteel.com/jujunchen/comments/284386.htmlhttp://www.aygfsteel.com/jujunchen/archive/2009/06/27/284386.html#Feedback0http://www.aygfsteel.com/jujunchen/comments/commentRss/284386.htmlhttp://www.aygfsteel.com/jujunchen/services/trackbacks/284386.html
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
import java.awt.font.*;
import java.awt.geom.*;
public class CreateImage


{
public static void main(String[] args) throws Exception

{
int width = 100;
int height = 100;
String s = "浣犲ソ";
File file = new File("c:/image.jpg");
Font font = new Font("Serif", Font.BOLD, 10);
BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = (Graphics2D)bi.getGraphics();
g2.setBackground(Color.WHITE);
g2.clearRect(0, 0, width, height);
g2.setPaint(Color.RED);
FontRenderContext context = g2.getFontRenderContext();
Rectangle2D bounds = font.getStringBounds(s, context);
double x = (width - bounds.getWidth()) / 2;
double y = (height - bounds.getHeight()) / 2;
double ascent = -bounds.getY();
double baseY = y + ascent;
g2.drawString(s, (int)x, (int)baseY);
ImageIO.write(bi, "jpg", file);
}
}
緇撴灉錛?br />

]]>
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