How to format date using Gson library in Java?

A Gson is a JSON library for Java, which is created by Google. By using Gson, we can generate JSON and convert JSON to java objects. We can create a Gson instance by creating a GsonBuilder instance and calling with the create() method. The GsonBuilder().setDateFormat() method configures Gson to serialize Date objects according to the pattern provided.

Syntax

public GsonBuilder setDateFormat(java.lang.String pattern)

Example

的中文翻译为：

示例

import java.util.Date;
import com.google.gson.*;
public class DateformatTest {
   public static void main(String[] args) {
      Employee emp = new Employee(115, "Surya", <strong>new Date()</strong>, 25000.00);
      <strong>Gson </strong>gson = new GsonBuilder().setDateFormat("yyyy-MM-dd").create();
      String result = gson.toJson(emp);
      System.out.println(result);
   }
}
// Employee class<strong>
</strong>class Employee {
   private int id;
   private String name;
   private Date doj;
   private double salary;
   public Employee(int id, String name, Date doj, double salary) {
      this.id = id;
      this.name = name;
      this.doj = doj;
      this.salary = salary;
   }
}

输出

{"id":115,"name":"Surya","doj":"2019-09-26","salary":25000.0}

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