Java list对象列表排序 实例

package com.test;

public class Bean {

    private String name;
private int priority; public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} public int getPriority() {
return priority;
} public void setPriority(int priority) {
this.priority = priority;
} }
package com.test;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Random; public class Test { @SuppressWarnings({ "unchecked", "rawtypes" })
public static void main(String[] args) { List<Bean> list = new ArrayList<Bean>();
for (int i = 1; i < 10; i++) {
Bean bean = new Bean();
bean.setName("name_" + i);
bean.setPriority(new Random().nextInt(10));
list.add(bean);
}
// 打印
for (Bean b : list) {
System.out.println(b.getPriority() + "|" + b.getName());
} Collections.sort(list, new Comparator() {
public int compare(Object a, Object b) {
int one = ((Bean) a).getPriority();
int two = ((Bean) b).getPriority();
return one - two;
}
});
System.out.println("--------------------------------");
// 打印
for (Bean b : list) {
System.out.println(b.getPriority() + "|" + b.getName());
}
} }
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