大俠們幫我看看是哪里錯(cuò)了--一個(gè)初學(xué)者

tyfrich

package JDBCTest;

import java.awt.*;      
import java.sql.*;  

class JDBCTest extends Frame {
TextArea myTextArea;
public JDBCTest () {

super("一個(gè)簡(jiǎn)單的利用JDBC(jconnect-5_2)查詢Sybase ASA7.0中數(shù)據(jù)的圖形化Java程序范例";
setLayout(new FlowLayout());
myTextArea = new TextArea(30,80);
add(myTextArea);
resize(500,500);
show();
myTextArea.appendText("數(shù)據(jù)庫(kù)查詢中，請(qǐng)等待......\n";
}
void  displayResults(ResultSet results) throws SQLException {

ResultSetMetaData resultsMetaData = results.getMetaData();
int cols = resultsMetaData.getColumnCount();

myTextArea.setText("";

while(results.next()) {
for(int i=1;i<=cols;i++) {
if(i>;1)
myTextArea.appendText("\t";
try{
myTextArea.appendText(results.getString(i));
}

catch(NullPointerException e){
}
}
myTextArea.appendText("\n";
}
}

public boolean handleEvent(Event evt) {
if (evt.id == Event.WINDOW_DESTROY) {
System.exit(0);
return true;
}
return super.handleEvent(evt);
}

public static void main(String argv[]) throws SQLException,Exception {

String queryString = "select top 10 * from goods";
JDBCTest myJDBCTest = new JDBCTest();

Class.forName("com.sybase.jdbc2.jdbc.SybDriver".newInstance();

Connection myConn = DriverManager.getConnection("jdbc:sybase:Tds:172.16.0.106:2638","dba","abestxyj";
Statement myStmt = myConn.createStatement();

ResultSet myResults = myStmt.executeQuery(queryString);
myJDBCTest.displayResults(myResults);

myResults.close();
myStmt.close();
myConn.close();
}
}

閉眼

把錯(cuò)誤信息貼出來(lái)吧

tyfrich

錯(cuò)誤信息：多謝了
Note: JDBCTest.java uses or overrides a deprecated API.
Note: Recompile with -deprecation for details.

qub

不是錯(cuò)誤，只警告。代碼中用到的一些方法在新JDK版本中有更好的實(shí)現(xiàn)。看一下JDK文檔。

public void resize(Dimension d)Deprecated. As of JDK version 1.1, replaced by setSize(Dimension).

public void appendText(String str)Deprecated. As of JDK version 1.1, replaced by append(String).

public boolean handleEvent(Event evt)Deprecated. As of JDK version 1.1 replaced by processEvent(AWTEvent).