From 538c116302454fe251b66773e3741a808fcb9185 Mon Sep 17 00:00:00 2001
From: chrisjaimes <45322800+chrisjaimes@users.noreply.github.com>
Date: Sat, 14 May 2022 05:29:19 -0400
Subject: [PATCH] BAEL-5521 Convert boolean to int in Java (#12017)

* added class for Article examples, created unit tests and modified pom in order to call Apache Commons outside test

* changed parameter to prevent NPE

Co-authored-by: Christian Jaimes <christian.jaimes@oracle>
---
 java-numbers-4/pom.xml                        |  1 -
 .../baeldung/booleantoint/BooleanToInt.java   | 42 ++++++++++++++
 .../booleantoint/BooleanToIntUnitTest.java    | 55 +++++++++++++++++++
 3 files changed, 97 insertions(+), 1 deletion(-)
 create mode 100644 java-numbers-4/src/main/java/com/baeldung/booleantoint/BooleanToInt.java
 create mode 100644 java-numbers-4/src/test/java/com/baeldung/booleantoint/BooleanToIntUnitTest.java

diff --git a/java-numbers-4/pom.xml b/java-numbers-4/pom.xml
index 40fe17cc0d..4750b58511 100644
--- a/java-numbers-4/pom.xml
+++ b/java-numbers-4/pom.xml
@@ -23,7 +23,6 @@
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
             <version>${commons-lang3.version}</version>
-            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
diff --git a/java-numbers-4/src/main/java/com/baeldung/booleantoint/BooleanToInt.java b/java-numbers-4/src/main/java/com/baeldung/booleantoint/BooleanToInt.java
new file mode 100644
index 0000000000..3cca1592fb
--- /dev/null
+++ b/java-numbers-4/src/main/java/com/baeldung/booleantoint/BooleanToInt.java
@@ -0,0 +1,42 @@
+package com.baeldung.booleantoint;
+
+import org.apache.commons.lang3.BooleanUtils;
+
+public class BooleanToInt {
+    public static int booleanPrimitiveToInt(boolean foo) {
+        int bar = 0;
+        if (foo) {
+            bar = 1;
+        }
+        return bar;
+    }
+
+    public static int booleanPrimitiveToIntTernary(boolean foo) {
+        return (foo) ? 1 : 0;
+    }
+
+    public static int booleanObjectToInt(boolean foo) {
+        return Boolean.compare(foo, false);
+    }
+
+    public static int booleanObjectToIntInverse(boolean foo) {
+        return Boolean.compare(foo, true) + 1;
+    }
+
+    public static int booleanObjectMethodToInt(Boolean foo) {
+        return foo.compareTo(false);
+    }
+
+    public static int booleanObjectMethodToIntInverse(Boolean foo) {
+        return foo.compareTo(true) + 1;
+    }
+
+    public static int booleanUtilsToInt(Boolean foo) {
+        return BooleanUtils.toInteger(foo);
+    }
+
+    public static int bitwiseBooleanToInt(Boolean foo) {
+        return (Boolean.hashCode(foo) >> 1) & 1;
+    }
+}
+
diff --git a/java-numbers-4/src/test/java/com/baeldung/booleantoint/BooleanToIntUnitTest.java b/java-numbers-4/src/test/java/com/baeldung/booleantoint/BooleanToIntUnitTest.java
new file mode 100644
index 0000000000..032eb1d28c
--- /dev/null
+++ b/java-numbers-4/src/test/java/com/baeldung/booleantoint/BooleanToIntUnitTest.java
@@ -0,0 +1,55 @@
+package com.baeldung.booleantoint;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class BooleanToIntUnitTest {
+    @Test
+    void givenBooleanPrimitiveValue_ThenReturnInt() {
+        assertEquals(1, BooleanToInt.booleanPrimitiveToInt(true));
+        assertEquals(0, BooleanToInt.booleanPrimitiveToInt(false));
+    }
+
+    @Test
+    void givenBooleanPrimitiveValue_ThenReturnIntTernary() {
+        assertEquals(1, BooleanToInt.booleanPrimitiveToIntTernary(true));
+        assertEquals(0, BooleanToInt.booleanPrimitiveToIntTernary(false));
+    }
+
+    @Test
+    void givenBooleanObject_ThenReturnInt() {
+        assertEquals(0, BooleanToInt.booleanObjectToInt(false));
+        assertEquals(1, BooleanToInt.booleanObjectToInt(true));
+    }
+
+    @Test
+    void givenBooleanObject_ThenReturnIntInverse() {
+        assertEquals(0, BooleanToInt.booleanObjectToIntInverse(false));
+        assertEquals(1, BooleanToInt.booleanObjectToIntInverse(true));
+    }
+
+    @Test
+    void givenBooleanObject_ThenReturnIntUsingClassMethod() {
+        assertEquals(0, BooleanToInt.booleanObjectMethodToInt(false));
+        assertEquals(1, BooleanToInt.booleanObjectMethodToInt(true));
+    }
+
+    @Test
+    void givenBooleanObject_ThenReturnIntUsingClassMethodInverse() {
+        assertEquals(0, BooleanToInt.booleanObjectMethodToIntInverse(false));
+        assertEquals(1, BooleanToInt.booleanObjectMethodToIntInverse(true));
+    }
+
+    @Test
+    void givenBoolean_ThenReturnIntUsingBooleanUtils() {
+        assertEquals(0, BooleanToInt.booleanUtilsToInt(false));
+        assertEquals(1, BooleanToInt.booleanUtilsToInt(true));
+    }
+
+    @Test
+    void givenBoolean_ThenReturnIntUsingBitwiseOperators() {
+        assertEquals(0, BooleanToInt.bitwiseBooleanToInt(false));
+        assertEquals(1, BooleanToInt.bitwiseBooleanToInt(true));
+    }
+}