In this article we are going to see about Java 8 Stream filter() , findAny() and orElse() with multiple conditions example program.
Employee.java
Output
Employee.java
package com.javatutorialcorner.java8;
public class Employee {
private String name;
private int age;
public Employee(String name, int age) {
this.setName(name);
this.setAge(age);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String toString() {
return "Employee {name : "+name+" , age : "+age+"}";
}
}
StreamFindAny.java
package com.javatutorialcorner.java8;
import java.util.Arrays;
import java.util.List;
public class StreamFindAny {
public static void main(String[] args) {
//Before Java 8
System.out.println("Before Java 8");
List employees = Arrays.asList(
new Employee("Sachin Tendulkar", 41),
new Employee("MS Dhoni", 34),
new Employee("Rahul Dravid", 40),
new Employee("Lokesh Rahul", 25),
new Employee("Sourav Ganguly", 40)
);
Employee employee = getEmployeeByName(employees, "Rahul Dravid");
System.out.println(employee);
//Java 8
System.out.println("Using Java 8 filter(), findAny(), orElse()");
Employee result1 = employees.stream() // Convert to steam
.filter(x ->"Lokesh Rahul".equals(x.getName()) && 25 == x.getAge()) // we want "Rahul Dravid" only
.findAny() // If 'findAny' then return found
.orElse(null); // If not found, return null
System.out.println(result1);
Employee result2 = employees.stream()
.filter(x -> "MS Dhoni".equals(x.getName()) && 33 == x.getAge())
.findAny()
.orElse(null);
System.out.println(result2);
}
private static Employee getEmployeeByName(List employees, String name) {
Employee result = null;
for (Employee employee : employees) {
if (name.equals(employee.getName())) {
result = employee;
}
}
return result;
}
}
Output
Before Java 8
Employee {name : Rahul Dravid , age : 40}
Using Java 8 filter(), findAny(), orElse()
Employee {name : Lokesh Rahul , age : 25}
null




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