大侠们帮我看看是哪里错了--一个初学者

tyfrich

package JDBCTest;

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

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

super("一个简单的利用JDBC(jconnect-5_2)查询Sybase ASA7.0中数据的图形化Java程序范例";
setLayout(new FlowLayout());
myTextArea = new TextArea(30,80);
add(myTextArea);
resize(500,500);
show();
myTextArea.appendText("数据库查询中，请等待......\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();
}
}

闭眼

把错误信息贴出来吧

tyfrich

错误信息：多谢了
Note: JDBCTest.java uses or overrides a deprecated API.
Note: Recompile with -deprecation for details.

qub

不是错误，只警告。代码中用到的一些方法在新JDK版本中有更好的实现。看一下JDK文档。

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).