BAEL-1344 (#3081)

* BAEL-1344 add java8 convert methods date, localdate, localdatetime

* BAEL-1344 add java9 example

* Move Date to LocalDate and LocalDateTime converters from core-java-8 to core-java-9

core-java-9/src/main/java/com/baeldung/java9/datetime/DateToLocalDateConverter.java

@@ -3,18 +3,35 @@
  */
 package com.baeldung.java9.datetime;
 
+import java.time.Instant;
 import java.time.LocalDate;
 import java.time.ZoneId;
 import java.util.Date;
 
 /**
- * Class which shows a way to convert java.util.Date into java.time.LocalDate with new Java 1.9.
+ * Class which shows a way to convert java.util.Date into java.time.LocalDate.
  * 
  * @author abialas
  *
  */
 public class DateToLocalDateConverter {
 
+    public static LocalDate convertToLocalDateViaInstant(Date dateToConvert) {
+        return dateToConvert.toInstant()
+            .atZone(ZoneId.systemDefault())
+            .toLocalDate();
+    }
+
+    public static LocalDate convertToLocalDateViaSqlDate(Date dateToConvert) {
+        return new java.sql.Date(dateToConvert.getTime()).toLocalDate();
+    }
+
+    public static LocalDate convertToLocalDateViaMilisecond(Date dateToConvert) {
+        return Instant.ofEpochMilli(dateToConvert.getTime())
+            .atZone(ZoneId.systemDefault())
+            .toLocalDate();
+    }
+
     public static LocalDate convertToLocalDate(Date dateToConvert) {
         return LocalDate.ofInstant(dateToConvert.toInstant(), ZoneId.systemDefault());
     }

core-java-9/src/main/java/com/baeldung/java9/datetime/DateToLocalDateTimeConverter.java

@@ -3,18 +3,35 @@
  */
 package com.baeldung.java9.datetime;
 
+import java.time.Instant;
 import java.time.LocalDateTime;
 import java.time.ZoneId;
 import java.util.Date;
 
 /**
- * Class which shows a way to convert java.util.Date into java.time.LocalDateTime with new Java 1.9.
+ * Class which shows a way to convert java.util.Date into java.time.LocalDateTime.
  * 
  * @author abialas
  *
  */
 public class DateToLocalDateTimeConverter {
 
+    public static LocalDateTime convertToLocalDateTimeViaInstant(Date dateToConvert) {
+        return dateToConvert.toInstant()
+            .atZone(ZoneId.systemDefault())
+            .toLocalDateTime();
+    }
+
+    public static LocalDateTime convertToLocalDateTimeViaSqlTimestamp(Date dateToConvert) {
+        return new java.sql.Timestamp(dateToConvert.getTime()).toLocalDateTime();
+    }
+
+    public static LocalDateTime convertToLocalDateTimeViaMilisecond(Date dateToConvert) {
+        return Instant.ofEpochMilli(dateToConvert.getTime())
+            .atZone(ZoneId.systemDefault())
+            .toLocalDateTime();
+    }
+
     public static LocalDateTime convertToLocalDateTime(Date dateToConvert) {
         return LocalDateTime.ofInstant(dateToConvert.toInstant(), ZoneId.systemDefault());
     }

core-java-9/src/main/java/com/baeldung/java9/datetime/LocalDateTimeToDateConverter.java

@@ -0,0 +1,27 @@
+/**
+ * 
+ */
+package com.baeldung.java9.datetime;
+
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+import java.util.Date;
+
+/**
+ * Class which shows different ways of converting java.time.LocalDateTime into java.util.Date. 
+ *  
+ * @author abialas
+ *
+ */
+public class LocalDateTimeToDateConverter {
+
+    public static Date convertToDateViaSqlTimestamp(LocalDateTime dateToConvert) {
+        return java.sql.Timestamp.valueOf(dateToConvert);
+    }
+
+    public static Date convertToDateViaInstant(LocalDateTime dateToConvert) {
+        return java.util.Date.from(dateToConvert.atZone(ZoneId.systemDefault())
+            .toInstant());
+    }
+
+}

core-java-9/src/main/java/com/baeldung/java9/datetime/LocalDateToDateConverter.java

@@ -0,0 +1,28 @@
+/**
+ * 
+ */
+package com.baeldung.java9.datetime;
+
+import java.time.LocalDate;
+import java.time.ZoneId;
+import java.util.Date;
+
+/**
+ * Class which shows different ways of converting java.time.LocalDate into java.util.Date. 
+ *  
+ * @author abialas
+ *
+ */
+public class LocalDateToDateConverter {
+
+    public static Date convertToDateViaSqlDate(LocalDate dateToConvert) {
+        return java.sql.Date.valueOf(dateToConvert);
+    }
+
+    public static Date convertToDateViaInstant(LocalDate dateToConvert) {
+        return java.util.Date.from(dateToConvert.atStartOfDay()
+            .atZone(ZoneId.systemDefault())
+            .toInstant());
+    }
+
+}