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1. Re: Question on removing duplicate data in a collection
If you do not want duplicates to be present, then use Hashset/set
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2. Re: Question on removing duplicate data in a collection
I hope this will help u
package com.domin;
public class Employee implements Comparable<Employee>{
private int id;
private String name;
private String salary;
private String recordStatus;
private int key;
public Employee(int id, String name, String salary, int key) {
super();
this.id = id;
this.name = name;
this.salary = salary;
this.key = key;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSalary() {
return salary;
}
public void setSalary(String salary) {
this.salary = salary;
}
public String getRecordStatus() {
return recordStatus;
}
public void setRecordStatus(String recordStatus) {
this.recordStatus = recordStatus;
}
public int getKey() {
return key;
}
public void setKey(int key) {
this.key = key;
}
@Override
public String toString() {
return "Employee [id=" + id + ", name=" + name + ", salary=" + salary + ", recordStatus=" + recordStatus
+ ", key=" + key + "]";
}
@Override
public int compareTo(Employee o) {
int currentval= this.getId();
int newval=o.getId();
if(currentval>newval){
return 1;
}else{
return -1;
}
}
}
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public static void main(String[] args) {
boolean flag=false;
List<Employee> list = new ArrayList<>();
TreeSet<Employee> newlist = new TreeSet<>();
list.add(new Employee(123, "zMadhu", "1000$",1));
list.add(new Employee(332, "bSudhan", "2000$",2));
list.add(new Employee(54, "cKongarass", "3000$",3));
list.add(new Employee(54, "xKongarass", "3000$",4));
list.add(new Employee(54, "aKongarass", "3000$",5));
for (Employee employee : list) {
flag=false;
for (Employee employee2 : newlist) {
if(employee.getId()==employee2.getId()){
flag=true;
}
}
if(!flag){
newlist.add(employee);
}
}
for (Employee employee2 : newlist) {
System.out.println(employee2);
}
}