public class Cache {// Compile this class, create cache.jar and copy it to /usr/share/java
static Cache instance=null;
public static Cache getInstance() {
if(instance==null) instance=makeInstance();
return instance;
}
static Cache makeInstance() {
try {
System.out.println("create new instance");
java.lang.Thread.sleep(3000);
System.out.println("done creating new instance");
} catch (Exception e) {}
return new Cache();
}
}