More Java Pitfalls 50 New Time-Saving Solutions and Workarounds phần 1 ppt

... type; 10 : 11 : StreamGobbler(InputStream is, String type) 12 : { 13 : this.is = is; 14 : this.type = type; 15 : } 16 : 17 : public void run() 18 : { 19 : try 20: { 21: InputStreamReader isr = new InputStreamReader(is); 22: ... produces: E:\classes\org\javapitfalls\item2> ;java org.javapitfalls.item2.SlowFileCopy j2sdk -1_ 4 _1- beta-windows-i586.exe Æ j2sdk-copy1.exe Elapsed...

Ngày tải lên: 13/08/2014, 12:21

... the pixels 11 5: for (int i= (imgHeight - 1) ; i >= 0; i ) 11 6: { 11 7: byte pad = 0; 11 8: for (int j=0; j < imgWidth; j++) 11 9: { 12 0: int pixel = imgPixels[(i * width) + j]; 12 1: byte alpha ... bbuf.put(blue); 12 8: bbuf.put(green); 12 9: bbuf.put(red); 13 0: } 13 1: if (padded) 13 2: bbuf.put(pad); 13 3: } 13 4: 13 5: bbuf.flip(); 13 6: fc.write(bbuf); 13 7: fo...

Ngày tải lên: 24/01/2014, 14:20

... Extension Mechanism 11 0 Sealed Packages 11 1 Security 11 2 Item 14 : What Do You Collect? 11 2 Item 15 : Avoiding Singleton Pitfalls 11 7 When Multiple Singletons in Your VM Happen 11 9 When Singletons ... t.printStackTrace(); 19 : } 20: } 21: } Listing 1. 1 BadExecJavac .java A run of BadExecJavac produces the following: E:\classes\org\javapitfalls\item1 > ;java Æ org.javap...

Ngày tải lên: 27/06/2014, 08:20

... public class XpathLookup 10 : { 11 : public static void main(String args[]) 12 : { 13 : try 14 : { 15 : if (args.length < 1) 16 : { 17 : System.out.println(“USAGE: “ + 18 : “org.javapitfalls.item8.BadDomLookup ... http://www.simpopdf.com 11 : { 12 : 13 : 14 : //This creates the logger! 15 : m_log = Æ Logger.getLogger(“org .pitfalls. BadLoggerExample1.logger”); 16 : 17 : m_...

Ngày tải lên: 13/08/2014, 12:21

... Listing 11 .1 (continued) 92 Item 11 Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com 04: 2700 05: 2 710 06: 2 711 07: 2 712 08: 2 713 09: 2 714 10 : 2 715 11 : 2720 12 : 2730 13 : 2740 14 : ... -cp “D:\pkoDev\beans\classes;C:\dom4j\lib\dom4j.jar;D: \java_ xml_pack-winter- 01- dev\jaxp -1. 2-ea1\xalan.jar;D: \java_ xml_pack-winter- 01- dev\jaxp -1. 2-...

Ngày tải lên: 13/08/2014, 12:21

... GoodLayeredPane() 10 : { 11 : JLayeredPane lp = new JLayeredPane(); 12 : 13 : // set the size of this pane 14 : lp.setPreferredSize (new Dimension (10 0 ,10 0)); 15 : 16 : // add a Colored Panel 17 : JPanel jpnl = new ... url=”http://www.amazon.com/exec/obidos/redirect?tag=webservices- 20%26creative=D3AG4L7PI53LPH%26camp=2025%26link_code=xm2%26path=ASIN/047 12 37 515 ”> <A...

Ngày tải lên: 13/08/2014, 12:21

... ByteArrayOutputStream (10 24); 10 6: else 10 7: baos.reset(); 10 8: if (buf == null) 10 9: buf = new byte [10 24]; 11 0: String response = null; 11 1: int cnt=0; 11 2: while ( (cnt = in.read(buf)) != -1) 11 3: { 11 4: ... void commandAction(Command c, Displayable s) 11 6: { 11 7: String targets = null; 11 8: try 11 9: { 12 0: if (c == exitCommand) 12 1: { 12 2: destroyApp(fa...

Ngày tải lên: 13/08/2014, 12:21

... HttpServlet { 10 : 11 : String driver; 12 : String dbname; 13 : String username; 14 : String password; 15 : 16 : authenticateHelper() {} 17 : 18 : public void getDBProperties() { 19 : 20: URL url = null; 21: ... 09: ds = null; 10 : } 11 : 12 : if (ds != null) { 13 : 14 : try { 15 : // determine if a particular resource is cached 16 : URL url = 17 : new Æ URL(“http:/ /ja...

Ngày tải lên: 13/08/2014, 12:21

... connecting to the database.” + 11 3: “ Please see your systems administrator for details.”); 11 4: e.printStackTrace(); 11 5: } 11 6: 11 7: } 11 8: 11 9: 12 0: } 12 1: 12 2: Listing 32.4 (continued) 290 ... out.write(buffer, 0, count); 10 9: out.flush(); 11 0: count = br.read(buffer, 0, buffer.length); 11 1: } 11 2: while (count != -1) ; 11 3: } 11 4: catch (Exception e) 11...

Ngày tải lên: 13/08/2014, 12:21

... javax.xml.soap.SOAPMessage; 010 : import javax.xml.soap.SOAPPart; 011 : import javax.xml.soap.SOAPEnvelope; 012 : import javax.xml.soap.SOAPHeader; 013 : import javax.xml.soap.SOAPElement; 014 : import javax.xml.soap.Name; 015 : ... tabletypes = {“TABLE”}; 10 : 11 : if (conn == null) 12 : { 13 : throw new Exception(“Could not establish a connection!”); 14 : } 15 : 16 : Database...

Ngày tải lên: 13/08/2014, 12:21