diff --git a/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/ConstructorParameterPropertyDescriptor.java b/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/ConstructorParameterPropertyDescriptor.java
index d2fdc0787d..dfc6f00653 100644
--- a/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/ConstructorParameterPropertyDescriptor.java
+++ b/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/ConstructorParameterPropertyDescriptor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,6 +18,7 @@ package org.springframework.boot.configurationprocessor;
 
 import java.util.List;
 import java.util.Map;
+import java.util.function.Function;
 import java.util.stream.Collectors;
 
 import javax.lang.model.element.AnnotationMirror;
@@ -106,21 +107,14 @@ class ConstructorParameterPropertyDescriptor extends PropertyDescriptor<Variable
 
 		private static final DefaultValueCoercionTypeVisitor INSTANCE = new DefaultValueCoercionTypeVisitor();
 
-		private Integer parseInteger(String value) {
+		private <T extends Number> T parseNumber(String value, Function<String, T> parser,
+				PrimitiveType primitiveType) {
 			try {
-				return Integer.valueOf(value);
+				return parser.apply(value);
 			}
 			catch (NumberFormatException ex) {
-				throw new IllegalArgumentException(String.format("Invalid number representation '%s'", value));
-			}
-		}
-
-		private Double parseFloatingPoint(String value) {
-			try {
-				return Double.valueOf(value);
-			}
-			catch (NumberFormatException ex) {
-				throw new IllegalArgumentException(String.format("Invalid floating point representation '%s'", value));
+				throw new IllegalArgumentException(
+						String.format("Invalid %s representation '%s'", primitiveType, value));
 			}
 		}
 
@@ -131,22 +125,22 @@ class ConstructorParameterPropertyDescriptor extends PropertyDescriptor<Variable
 
 		@Override
 		public Object visitPrimitiveAsByte(PrimitiveType t, String value) {
-			return parseInteger(value);
+			return parseNumber(value, Byte::parseByte, t);
 		}
 
 		@Override
 		public Object visitPrimitiveAsShort(PrimitiveType t, String value) {
-			return parseInteger(value);
+			return parseNumber(value, Short::parseShort, t);
 		}
 
 		@Override
 		public Object visitPrimitiveAsInt(PrimitiveType t, String value) {
-			return parseInteger(value);
+			return parseNumber(value, Integer::parseInt, t);
 		}
 
 		@Override
 		public Object visitPrimitiveAsLong(PrimitiveType t, String value) {
-			return parseInteger(value);
+			return parseNumber(value, Long::parseLong, t);
 		}
 
 		@Override
@@ -159,12 +153,12 @@ class ConstructorParameterPropertyDescriptor extends PropertyDescriptor<Variable
 
 		@Override
 		public Object visitPrimitiveAsFloat(PrimitiveType t, String value) {
-			return parseFloatingPoint(value);
+			return parseNumber(value, Float::parseFloat, t);
 		}
 
 		@Override
 		public Object visitPrimitiveAsDouble(PrimitiveType t, String value) {
-			return parseFloatingPoint(value);
+			return parseNumber(value, Double::parseDouble, t);
 		}
 
 	}
@@ -180,12 +174,12 @@ class ConstructorParameterPropertyDescriptor extends PropertyDescriptor<Variable
 
 		@Override
 		public Object visitPrimitiveAsByte(PrimitiveType t, Void ignore) {
-			return 0;
+			return (byte) 0;
 		}
 
 		@Override
 		public Object visitPrimitiveAsShort(PrimitiveType t, Void ignore) {
-			return 0;
+			return (short) 0;
 		}
 
 		@Override
@@ -205,7 +199,7 @@ class ConstructorParameterPropertyDescriptor extends PropertyDescriptor<Variable
 
 		@Override
 		public Object visitPrimitiveAsFloat(PrimitiveType t, Void ignore) {
-			return 0;
+			return 0F;
 		}
 
 		@Override
diff --git a/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/ConstructorParameterPropertyDescriptorTests.java b/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/ConstructorParameterPropertyDescriptorTests.java
index d3d6589315..c4a01ad1ca 100644
--- a/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/ConstructorParameterPropertyDescriptorTests.java
+++ b/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/ConstructorParameterPropertyDescriptorTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -155,12 +155,13 @@ class ConstructorParameterPropertyDescriptorTests extends PropertyDescriptorTest
 		process(ImmutablePrimitiveProperties.class, (roundEnv, metadataEnv) -> {
 			TypeElement ownerElement = roundEnv.getRootElement(ImmutablePrimitiveProperties.class);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "flag")).hasDefaultValue(false);
-			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "octet")).hasDefaultValue(0);
+			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "octet")).hasDefaultValue((byte) 0);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "letter")).hasDefaultValue(null);
-			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "number")).hasDefaultValue(0);
+			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "number"))
+					.hasDefaultValue((short) 0);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "counter")).hasDefaultValue(0);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "value")).hasDefaultValue(0L);
-			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "percentage")).hasDefaultValue(0);
+			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "percentage")).hasDefaultValue(0F);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "ratio")).hasDefaultValue(0D);
 		});
 	}
@@ -170,12 +171,14 @@ class ConstructorParameterPropertyDescriptorTests extends PropertyDescriptorTest
 		process(ImmutablePrimitiveWithDefaultsProperties.class, (roundEnv, metadataEnv) -> {
 			TypeElement ownerElement = roundEnv.getRootElement(ImmutablePrimitiveWithDefaultsProperties.class);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "flag")).hasDefaultValue(true);
-			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "octet")).hasDefaultValue(120);
+			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "octet"))
+					.hasDefaultValue((byte) 120);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "letter")).hasDefaultValue("a");
-			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "number")).hasDefaultValue(1000);
+			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "number"))
+					.hasDefaultValue((short) 1000);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "counter")).hasDefaultValue(42);
-			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "value")).hasDefaultValue(2000);
-			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "percentage")).hasDefaultValue(0.5);
+			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "value")).hasDefaultValue(2000L);
+			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "percentage")).hasDefaultValue(0.5F);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "ratio")).hasDefaultValue(42.42);
 		});
 	}
@@ -185,12 +188,14 @@ class ConstructorParameterPropertyDescriptorTests extends PropertyDescriptorTest
 		process(ImmutablePrimitiveWrapperWithDefaultsProperties.class, (roundEnv, metadataEnv) -> {
 			TypeElement ownerElement = roundEnv.getRootElement(ImmutablePrimitiveWrapperWithDefaultsProperties.class);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "flag")).hasDefaultValue(true);
-			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "octet")).hasDefaultValue(120);
+			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "octet"))
+					.hasDefaultValue((byte) 120);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "letter")).hasDefaultValue("a");
-			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "number")).hasDefaultValue(1000);
+			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "number"))
+					.hasDefaultValue((short) 1000);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "counter")).hasDefaultValue(42);
-			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "value")).hasDefaultValue(2000);
-			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "percentage")).hasDefaultValue(0.5);
+			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "value")).hasDefaultValue(2000L);
+			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "percentage")).hasDefaultValue(0.5F);
 			assertItemMetadata(metadataEnv, createPropertyDescriptor(ownerElement, "ratio")).hasDefaultValue(42.42);
 		});
 	}