[BAEL-2533] Formatting JSON Dates in Spring Boot (#6313)

* [BAEL-2533] formatting json date output in spring boot

* [BAEL-2533] removed unused import

spring-boot/src/main/java/com/baeldung/jsondateformat/ContactWithJavaUtilDate.java

@@ -0,0 +1,69 @@
+package com.baeldung.jsondateformat;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+
+import java.util.Date;
+
+public class ContactWithJavaUtilDate {
+
+    private String name;
+    private String address;
+    private String phone;
+
+    @JsonFormat(pattern="yyyy-MM-dd")
+    private Date birthday;
+
+    @JsonFormat(pattern="yyyy-MM-dd HH:mm:ss")
+    private Date lastUpdate;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getAddress() {
+        return address;
+    }
+
+    public void setAddress(String address) {
+        this.address = address;
+    }
+
+    public String getPhone() {
+        return phone;
+    }
+
+    public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    public Date getBirthday() {
+        return birthday;
+    }
+
+    public void setBirthday(Date birthday) {
+        this.birthday = birthday;
+    }
+
+    public Date getLastUpdate() {
+        return lastUpdate;
+    }
+
+    public void setLastUpdate(Date lastUpdate) {
+        this.lastUpdate = lastUpdate;
+    }
+
+    public ContactWithJavaUtilDate() {
+    }
+
+    public ContactWithJavaUtilDate(String name, String address, String phone, Date birthday, Date lastUpdate) {
+        this.name = name;
+        this.address = address;
+        this.phone = phone;
+        this.birthday = birthday;
+        this.lastUpdate = lastUpdate;
+    }
+}