package test;
class aceing {
/**
- @param args
*/
private static aceing ace;
public aceing()
{
super();
System.out.println("aceing類中的無參構造器調用了");
}
public static aceing getAceing() {
if(ace == null)
{
ace = new aceing();
}
return ace;
}
}
package test;
public class test1 {
/**
- @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
aceing a1 = aceing.getAceing();
aceing a2 = aceing.getAceing();
if(a1 == a2)
{
System.out.println("創建的兩個對象引用指向的是一個對象");
}
else
{
System.out.println("創建的兩個對象引用指向的不是一個對象");
}
}
}