diff --git a/jpx/src/main/java/io/jenetics/jpx/format/Field.java b/jpx/src/main/java/io/jenetics/jpx/format/Field.java
index 31eb558b..f13e258e 100644
--- a/jpx/src/main/java/io/jenetics/jpx/format/Field.java
+++ b/jpx/src/main/java/io/jenetics/jpx/format/Field.java
@@ -17,6 +17,8 @@
 
 import static java.lang.Math.abs;
 import static java.lang.Math.floor;
+import static java.math.RoundingMode.DOWN;
+import static java.math.RoundingMode.HALF_EVEN;
 import static java.util.Objects.requireNonNull;
 
 import java.math.RoundingMode;
@@ -60,12 +62,12 @@ abstract class Field implements Format {
 	void setPrefixSign(final boolean b) {
 	}
 
-	void setFormat(final NumberFormat format) {
-		_format.set(requireNonNull(format));
+	void setTruncate(final boolean b) {
+		_format.get().setRoundingMode(b ? DOWN : HALF_EVEN);
 	}
 
-	void setRoundingMode(final RoundingMode mode) {
-		_format.get().setRoundingMode(mode);
+	void setFormat(final NumberFormat format) {
+		_format.set(requireNonNull(format));
 	}
 
 	int getMinimumFractionDigits() {
diff --git a/jpx/src/main/java/io/jenetics/jpx/format/LatitudeDegree.java b/jpx/src/main/java/io/jenetics/jpx/format/LatitudeDegree.java
index 4c7a75c4..2467a90c 100644
--- a/jpx/src/main/java/io/jenetics/jpx/format/LatitudeDegree.java
+++ b/jpx/src/main/java/io/jenetics/jpx/format/LatitudeDegree.java
@@ -16,8 +16,6 @@
 package io.jenetics.jpx.format;
 
 import static java.lang.Math.abs;
-import static java.math.RoundingMode.DOWN;
-import static java.math.RoundingMode.HALF_EVEN;
 
 import java.text.DecimalFormat;
 import java.text.ParsePosition;
@@ -54,10 +52,6 @@ boolean isPrefixSign() {
 		return _prefixSign;
 	}
 
-	void setTruncate(final boolean b) {
-		setRoundingMode(b ? DOWN : HALF_EVEN);
-	}
-
 	private boolean absolute = false;
 
 	void setAbsolute(final boolean b) {
diff --git a/jpx/src/main/java/io/jenetics/jpx/format/LatitudeMinute.java b/jpx/src/main/java/io/jenetics/jpx/format/LatitudeMinute.java
index 3ed72222..4e53e3b5 100644
--- a/jpx/src/main/java/io/jenetics/jpx/format/LatitudeMinute.java
+++ b/jpx/src/main/java/io/jenetics/jpx/format/LatitudeMinute.java
@@ -15,9 +15,6 @@
  */
 package io.jenetics.jpx.format;
 
-import static java.math.RoundingMode.DOWN;
-import static java.math.RoundingMode.HALF_EVEN;
-
 import java.text.ParsePosition;
 import java.util.Optional;
 
@@ -41,10 +38,6 @@ char type() {
 		return 'M';
 	}
 
-	void setTruncate(final boolean b) {
-		setRoundingMode(b ? DOWN : HALF_EVEN);
-	}
-
 	@Override
 	public void parse(
 		final CharSequence in,
diff --git a/jpx/src/main/java/io/jenetics/jpx/format/LongitudeDegree.java b/jpx/src/main/java/io/jenetics/jpx/format/LongitudeDegree.java
index 269d9fba..a36fc6d3 100644
--- a/jpx/src/main/java/io/jenetics/jpx/format/LongitudeDegree.java
+++ b/jpx/src/main/java/io/jenetics/jpx/format/LongitudeDegree.java
@@ -16,8 +16,6 @@
 package io.jenetics.jpx.format;
 
 import static java.lang.Math.abs;
-import static java.math.RoundingMode.DOWN;
-import static java.math.RoundingMode.HALF_EVEN;
 
 import java.text.DecimalFormat;
 import java.text.ParsePosition;
@@ -58,10 +56,6 @@ boolean isPrefixSign() {
 		return prefixSign;
 	}
 
-	void setTruncate(final boolean b) {
-		setRoundingMode(b ? DOWN : HALF_EVEN);
-	}
-
 	void setAbsolute(final boolean b) {
 		absolute = b;
 	}
diff --git a/jpx/src/main/java/io/jenetics/jpx/format/LongitudeMinute.java b/jpx/src/main/java/io/jenetics/jpx/format/LongitudeMinute.java
index 7985bac1..a08c6bac 100644
--- a/jpx/src/main/java/io/jenetics/jpx/format/LongitudeMinute.java
+++ b/jpx/src/main/java/io/jenetics/jpx/format/LongitudeMinute.java
@@ -15,9 +15,6 @@
  */
 package io.jenetics.jpx.format;
 
-import static java.math.RoundingMode.DOWN;
-import static java.math.RoundingMode.HALF_EVEN;
-
 import java.text.ParsePosition;
 import java.util.Optional;
 
@@ -41,10 +38,6 @@ char type() {
 		return 'm';
 	}
 
-	void setTruncate(final boolean b) {
-		setRoundingMode(b ? DOWN : HALF_EVEN);
-	}
-
 	@Override
 	public void parse(
 		final CharSequence in,