Code Snippets: Using java.lang.Comparable Interface

import java.util.Arrays;

class Employee implements Comparable {

String empName;

String empCode;

int totalMarks;

double totalSalary;

/**
* @return
*/
public String getName() {
return empName;
}

/**
* @return
*/
public String getEmpCode() {
return empCode;
}

/**
* @param strEmpName
*/
public void setName(String strEmpName) {
empName = strEmpName;
}

/**
* @param strEmpCode
*/
public void setEmpCode(String strEmpCode) {
empCode = strEmpCode;
}

public double getTotalSalary() {
return totalSalary;
}

public void setTotalSalary(double totalSalary) {
this.totalSalary = totalSalary;
}

// sorting in desecending order of salary
public int compareTo(Object o) {

Employee employee = (Employee) o;

int comp = 0;

if (this.getTotalSalary() < employee.getTotalSalary()) {
comp = -1;
} else if (this.getTotalSalary() > employee.getTotalSalary()) {
comp = 1;
}
return comp;
}

}

//Sorts salaries of specified employess in ascending order

public class SortData {

public static void main(String[] args) {

Employee[] employee = new Employee[3];

employee[0] = new Employee();
employee[0].setName("John Adams");
employee[0].setEmpCode("3");
employee[0].setTotalSalary(2100.78);

employee[1] = new Employee();
employee[1].setName("Gregory Peck");
employee[1].setEmpCode("2");
employee[1].setTotalSalary(1234.45);

employee[2] = new Employee();
employee[2].setName("John Travolta");
employee[2].setEmpCode("1");
employee[2].setTotalSalary( 1533.87);

System.out.println("Before Comparator");
for (int i = 0; i < employee.length; i++) {
System.out.println("Rank:" + (i + 1) + "   " + employee[i].getName()
+ " Total Salary: " + employee[i].getTotalSalary());
}

Arrays.sort(employee);

System.out.println("After Comparator");
for (int i = 0; i <  employee.length; i++) {
System.out.println("Rank:" + (i + 1) + "   " + employee[i].getName()
+ " Total Salary: " + employee[i].getTotalSalary());
}
}
}