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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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ServletOuptputStream Vs PrintWriter
ServletOutputStream: ServletResponse.getOutputStream() returns a ServletOutputStream
suitable for writing binary data in the response. The servlet
container does not encode the binary data, it sends the raw data
as it is.
PrintWriter: ServletResponse.getWriter() returns PrintWriter object which sends
character text to the client. The PrintWriter uses the character
encoding returned by getCharacterEncoding(). If the response's
character encoding has not been specified then it does default
character encoding.
Tomorrow is often the busiest day of the week.
-- Spanish Proverb
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