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Method Reference - Reference to a Constructor example.
This page shows a simple example of Method Reference feature of reference to a construtor:
package com.java2novice.methodreference;
import com.java2novice.lambda.Employee;
public class ConstructorRefEx {
public static void main(String a[]) {
EmployeeFactory empFactory = Employee::new;
Employee emp = empFactory.getEmployee("Nataraja G", "Accounts", 8000);
System.out.println(emp);
}
}
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Here is EmployeeFactory class:
package com.java2novice.methodreference;
import com.java2novice.lambda.Employee;
public interface EmployeeFactory {
public abstract Employee getEmployee(String name, String account, Integer salary);
}
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Here is Employee POJO class:
package com.java2novice.lambda;
public class Employee {
private String name;
private String account;
private Integer salary;
public Employee(String name, String account, Integer salary) {
super();
this.name = name;
this.account = account;
this.salary = salary;
}
@Override
public String toString() {
return "name: "+ this.name +" | account: "+ this.account +" | salary: "+this.salary;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAccount() {
return account;
}
public void setAccount(String account) {
this.account = account;
}
public Integer getSalary() {
return salary;
}
public void setSalary(Integer salary) {
this.salary = salary;
}
}
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| Output: |
name: Nataraja G | account: Accounts | salary: 8000
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Java-8 Method References Examples
- Method Reference - Reference to a Static Method example.
- Method Reference - Reference to a Instance Method example.
- Method Reference - Reference to a Constructor example.
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Exception Vs Error
An error is an irrecoverable condition occurring at runtime like out of
memory error. These kind of jvm errors cannot be handled at runtime.
Exceptions are because of condition failures, which can be handled
easily at runtime.
I don’t know the key to success, but the key to failure is trying to please everybody.
-- Bill Cosby
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