集合中保存对象，如何按对象中的属性排序？

package testProject;import java.util.ArrayList;import java.util.Collections;import java.util.Comparator;public class TestPro {public static void main(String[] args) {ArrayList<TestPro> zsList = new ArrayList<TestPro>();zsList.add(new TestPro("1", "0000"));zsList.add(new TestPro("Y", "1111"));zsList.add(new TestPro("Y", "1111444"));zsList.add(new TestPro("我是一个热好人", "2222"));zsList.add(new TestPro("S", "3333"));zsList.add(new TestPro("A", "4444"));zsList.add(new TestPro("I", "5555"));zsList.add(new TestPro("V", "6666"));zsList.add(new TestPro("Q", "7777"));zsList.add(new TestPro("I", "8888"));Collections.sort(zsList, new Comparator<TestPro>() {@Overridepublic int compare(TestPro o1, TestPro o2) {// TODO Auto-generated method stubreturn o1.getAbbreviation().compareTo(o2.getAbbreviation());}});for (int i = 0; i < zsList.size(); i++) {System.out.println(zsList.get(i).getAbbreviation() + "==="+ zsList.get(i).getName());}}private String abbreviation;private String name;public TestPro() {super();}public TestPro(String abbreviation, String name) {super();this.abbreviation = abbreviation;this.name = name;}public String getAbbreviation() {return abbreviation;}public void setAbbreviation(String abbreviation) {this.abbreviation = abbreviation;}public String getName() {return name;}public void setName(String name) {this.name = name;}}

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