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jPanel1 = new JPanel(){
@Override
public void paint(Graphics g) {
super.paint(g);
if(image1 != null){
g.clearRect(0, 0, this.getWidth(), this.getHeight());
g.drawImage(image1, 0, 0, null);
g.dispose();
}
}
};
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jPanel1.setPreferredSize(new Dimension(image1.getWidth(),image1.getHeight()));
jPanel1.updateUI();
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package chape8;
import java.math.BigDecimal;
/**
* 8-48
* Èç¹ûÏëÒªÖªµÀ¾«È·µÄ´ð°¸£¬¾ÍÒª±ÜÃâʹÓÃdoubleºÍfloat
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ʹÓÃjar°ü:
commons-pool-1.5.3.jar,tomcat-naming-common.jar,commons-pool-1.5.3-bin.zip,commons-dbcp.jar
×¢Òâ:jdbc Çý¶¯ÒªÓëÊý¾Ý¿â¼æÈÝ.
package test.comm;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Hashtable;
import javax.naming.InitialCont ......
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.FileOutputStream;
import java.util.Random;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
/**
* ¹¦ÄÜÃèÊö ......
http://cheneyph.javaeye.com/blog/477829
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µÚÒ»ÖÖ£ºÀûÓÃResultSetµÄgetRow·½·¨À´»ñµÃResultSetµÄ×ÜÐÐÊý
Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABL ......