@Override
public Object firstItemId() {
synchronized (this.groups) {
- if (this.groups.size() > 0) {
+ if (!this.groups.isEmpty()) {
return this.groups.get(0);
}
}
@Override
public Object lastItemId() {
synchronized (this.groups) {
- if (this.groups.size() > 0) {
+ if (!this.groups.isEmpty()) {
return this.groups.get(this.groups.size() - 1);
}
}
@Override
public boolean isFirstId(Object itemId) {
synchronized (this.groups) {
- if (this.groups.size() > 0) {
- return (this.groups.get(0).equals(itemId));
+ if (!this.groups.isEmpty()) {
+ return this.groups.get(0).equals(itemId);
}
}
return false;
@Override
public boolean isLastId(Object itemId) {
synchronized (this.groups) {
- if (this.groups.size() > 0) {
- return (this.groups.get(this.groups.size() - 1).equals(itemId));
+ if (!this.groups.isEmpty()) {
+ return this.groups.get(this.groups.size() - 1).equals(itemId);
}
}
return false;
//
// You cannot remove the default group
//
- if (((OnapPDPGroup) itemId).getId().equals("Default")) {
+ if ("Default".equals(((OnapPDPGroup) itemId).getId())) {
throw new UnsupportedOperationException("You can't remove the Default Group.");
}
//