我是 Java 初学者，我问一些关于 Java 编写通用代码的传统的话。我在下面的代码中编写了用于将项目推入通用排序集合的辅助类，我想知道它是否被接受？或者我应该扩展一些集合的基类？或者其他方式在 Java 中欢迎更多？
package com.rkovalev.Helper;
import java.util.Comparator;
import java.util.List;
public abstract class ListExtensions {
public static <T> void addOnCompare(List<T> collection, T item, Comparator<T> comparator) {
synchronized(collection) {
int i = 0;
int size = collection.size();
if (size == 1) {
int diff = comparator.compare(item, collection.get(0));
switch(diff) {
case 1: i++; break;
default: break;
}
} else {
int range = size - 1;
i = size / 2;
int left = 0;
int right = range;
while(true) {
if (i <= 0) { i = 0; break; }
if (i > range) { i = range; break; }
int diff = comparator.compare(item, collection.get(i));
if (diff == 0) break;
else {
if (diff == -1) right = i;
if (diff == 1) left = i;
int near = i + diff;
if (near < 0) { i = 0; break; }
if (near > range) { i = range + 1; break; }
int diff_near = comparator.compare(item, collection.get(near));
if (diff_near == 0) { i = diff_near; break; }
if (diff_near == diff) {
int step = (right-left)/2;
if (step == 0) step = 1;
switch(diff){
case -1:
right = i;
i = i - step; break;
case 1:
left = i;
i = i + step; break;
}
} else if (diff > diff_near) {
i = near; break;
} else { break; }
}
}
}
collection.add(i, item);
}
}
}