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public interface UserDao {
public void save();
}
public class Override_Overload implements UserDao{
@Override
public void save() {
// TODO Auto-generated method stub
}
//ÒÔÏÂÈýÖз½¾ÍÊÇoverloadÊÇÖØÔØ
public int find(String name){
return 1;
}
public int find(String name,Long id){
return 1;
}
public int find(Long id){
return 1;
}
}
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Myeclipse±¨Could not create Java VM
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Myeclipse6.0£¬tomcat6.0, 2GÄÚ´æ
½ñÌìһֱʹÓÃDEBUGģʽÆô¶¯tomcatÒ»Ö±ºÜÂý£¬ËùÒÔÏëʹÓÃRUNģʽÀ´Æô¶¯£¬µ«ÊÇÿ´ÎÆô¶¯¶¼±¨´í“could not create the java virtual machine”£¬ÌáʾÉèÖÃÄÚ´æ²»×㣬°Ù¶ÈÏ£¬¶¼ÒªÇóÐÞ¸Äeclipse.iniÅäÖÃÎļþ£¬µ«ÊÇÐÞ¸ÄÁ˲»ºÃÊ ......
public class DealLockTest implements Runnable {
static String i = new String();
static String j = new String();
private String str = null;
public DealLockTest(String str) {
this.str = str;
}
public static void main(String[] args) {
new Thread(new DealLockTest("i")).start( ......
1.ʹÓÃJFrameµÄenableEventsºÍprocessWindowEvent
//Frame1.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Frame1 extends JFrame {
public Frame1() {
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
this.setSize(ne ......
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/**
* ShowExtending
* ÑÝʾ¼Ì³ÐʱµÄÏÖÏó
*/
class SupCls {
static String s1 = "¸¸ÀàÀà±äÁ¿s1";
String s2 = "¸¸ÀàʵÀý±äÁ¿s2";
SupCls(){
System.out.println("¸¸À๹ÔìÆ÷±»·ÃÎÊ");
}
public static void f1(){
......
¸Õ¸ÕÔËÐÐjava HelloWorld.class£¬ÀÏÊÇ˵£º
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld/class
Caused by: java.lang.ClassNotFoundException: HelloWorld.class
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
  ......