public class CClasses implements java.io.Serializable { // Fields private Integer cpk; private CGrade CGrade; private String cname; private Integer tec; private Set CStudentses = new HashSet(0); private Set teClasses = new HashSet(0); private Set CRectifies = new HashSet(0); // Constructors /** default constructor */
public CClasses() {
} /** full constructor */
public CClasses(CGrade CGrade, String cname, Integer tec, Set CStudentses,
Set teClasses, Set CRectifies) {
this.CGrade = CGrade;
this.cname = cname;
this.tec = tec;
this.CStudentses = CStudentses;
this.teClasses = teClasses;
this.CRectifies = CRectifies;
} // Property accessors public Integer getCpk() {
return this.cpk;
} public void setCpk(Integer cpk) {
this.cpk = cpk;
} public CGrade getCGrade() {
return this.CGrade;
} public void setCGrade(CGrade CGrade) {
this.CGrade = CGrade;
} public String getCname() {
return this.cname;
} public void setCname(String cname) {
this.cname = cname;
} public Integer getTec() {
return this.tec;
} public void setTec(Integer tec) {
this.tec = tec;
} public Set getCStudentses() {
return this.CStudentses;
} public void setCStudentses(Set CStudentses) {
this.CStudentses = CStudentses;
} public Set getTeClasses() {
return this.teClasses;
} public void setTeClasses(Set teClasses) {
this.teClasses = teClasses;
} public Set getCRectifies() {
return this.CRectifies;
} public void setCRectifies(Set CRectifies) {
this.CRectifies = CRectifies;
}}我有这没一个实体类,Set set=**.getClasses();
因为set是无序的,我想把它排序.要怎么写啊,要有源代码!!
public CClasses() {
} /** full constructor */
public CClasses(CGrade CGrade, String cname, Integer tec, Set CStudentses,
Set teClasses, Set CRectifies) {
this.CGrade = CGrade;
this.cname = cname;
this.tec = tec;
this.CStudentses = CStudentses;
this.teClasses = teClasses;
this.CRectifies = CRectifies;
} // Property accessors public Integer getCpk() {
return this.cpk;
} public void setCpk(Integer cpk) {
this.cpk = cpk;
} public CGrade getCGrade() {
return this.CGrade;
} public void setCGrade(CGrade CGrade) {
this.CGrade = CGrade;
} public String getCname() {
return this.cname;
} public void setCname(String cname) {
this.cname = cname;
} public Integer getTec() {
return this.tec;
} public void setTec(Integer tec) {
this.tec = tec;
} public Set getCStudentses() {
return this.CStudentses;
} public void setCStudentses(Set CStudentses) {
this.CStudentses = CStudentses;
} public Set getTeClasses() {
return this.teClasses;
} public void setTeClasses(Set teClasses) {
this.teClasses = teClasses;
} public Set getCRectifies() {
return this.CRectifies;
} public void setCRectifies(Set CRectifies) {
this.CRectifies = CRectifies;
}}我有这没一个实体类,Set set=**.getClasses();
因为set是无序的,我想把它排序.要怎么写啊,要有源代码!!
解决方案 »
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Set set=new TreeSet(new java.util.Comparator(){
public int compare(Object o1, Object o2) {
return ((CClasses)o1).getCpk() - ((CClasses)o2).getCpk();
}});
然后参考: http://blog.csdn.net/caoyinghui1986/archive/2008/03/30/2229937.aspx