[Java]20·Ç³£ÓÐÓõÄJava³ÌÐòƬ¶Î

1. ×Ö·û´®ÓÐÕûÐ͵ÄÏ໥ת»»
1   
2 String a = String.valueOf(2);   //integer to numeric string  
3 int i = Integer.parseInt(a); //numeric string to an int 
2. ÏòÎļþĩβÌí¼ÓÄÚÈÝ
01   
02 BufferedWriter out = null;  
03 try {  
04     out = new BufferedWriter(new FileWriter(”filename”, true));  
05     out.write(”aString”);  
06 } catch (IOException e) {  
07     // error processing code  
08 } finally {  
09     if (out != null) {  
10         out.close();  
11     }  
12 } 
3. µÃµ½µ±Ç°·½·¨µÄÃû×Ö
1 String methodName = Thread.currentThread().getStackTrace()[1].getMethodName(); 
4. ת×Ö·û´®µ½ÈÕÆÚ
1   
2 java.util.Date = java.text.DateFormat.getDateInstance().parse(date String); 
»òÕßÊÇ£º
1   
2 SimpleDateFormat format = new SimpleDateFormat( "dd.MM.yyyy" );  
3 Date date = format.parse( myString ); 
5. ʹÓÃJDBCÁ´½ÓOracle
01 public class OracleJdbcTest  
02 {  
03     String driverClass = "oracle.jdbc.driver.OracleDriver";  
04   
05     Connection con;  
06   
07     public void init(FileInputStream fs) throws ClassNotFoundException, SQLException, FileNotFoundException, IOException  
08     {  
09         Properties props = new Properties();  
10         props.load(fs);  
11         String url = props.getProperty("db.url");&nbs