[英]Collections Sorting in Java
Whats wrong with this sort? 这类错了什么? It doesn't work properly.
它无法正常工作。
public List<LibRegistration> getLibraryRegistrationsSortedByTypeAndName()
{
List<LibRegistration> l = getLibRegs();
Collections.sort(l, new Comparator<LibRegistration>() {
public int compare(LibRegistration o1, LibRegistration o2) {
return o1.getLibraryType().compareTo(o2.getLibraryType()) != 0?o1.getLibraryType().compareTo(o2.getLibraryType()):o1.getLibraryName().compareTo(o2.getLibraryName());
}
});
return l;
}
Nothing wrong, more clear: 没有错,更清楚:
public int compare(LibRegistration o1, LibRegistration o2) {
int cmp = o1.getLibraryType().compareTo(o2.getLibraryType());
if (cmp == 0)
cmp = o1.getLibraryName().compareTo(o2.getLibraryName());
return cmp;
}
Though nulls not allowed and compareTo well defined. 虽然不允许空值并且compareTo定义良好。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.