Convert boolean to int in Java

Question

What is the most accepted way to convert a boolean to an int in Java

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If you use Apache Commons Lang  which I think a lot of projects use it   you can just use it like this    int myInt   BooleanUtils toInteger boolean expression      toInteger method returns 1 if boolean expression is true  0 otherwise

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That depends on the situation  Often the most simple approach is the best because it is easy to understand   if  something        otherThing   1    else       otherThing   0      or  int otherThing   something   1   0    But sometimes it useful to use an Enum instead of a boolean flag  Let imagine there are synchronous and asynchronous processes   Process process   Process SYNCHRONOUS  System out println process getCode       In Java  enum can have additional attributes and methods   public enum Process        SYNCHRONOUS  0       ASYNCHRONOUS  1        private int code      private Process  int code            this code   code             public int getCode             return code

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If you want to obfuscate  use this   System out println  1  amp  Boolean hashCode  true    gt  gt  1        1 System out println  1  amp  Boolean hashCode  false    gt  gt  1       0

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int val   b  1   0

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Using the ternary operator is the most simple  most efficient  and most readable way to do what you want  I encourage you to use this solution   However  I can t resist to propose an alternative  contrived  inefficient  unreadable solution   int boolToInt Boolean b        return b compareTo false       Hey  people like to vote for such cool answers    Edit  By the way  I often saw conversions from a boolean to an int for the sole purpose of doing a comparison of the two values  generally  in implementations of compareTo method   Boolean compareTo is the way to go in those specific cases   Edit 2  Java 7 introduced a new utility function that works with primitive types directly  Boolean compare  Thanks shmosel   int boolToInt boolean b        return Boolean compare b  false

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Lets play trick with Boolean compare boolean  boolean   Default behavior of function  if both values are equal than it returns 0 otherwise -1   public int valueOf Boolean flag       return Boolean compare flag  Boolean TRUE    1      Explanation  As we know default return of Boolean compare is -1 in case of mis-match so  1 make return value to 0 for False and 1 for True

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boolean b          int i   -  false  indexOf      b

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import org apache commons lang3 BooleanUtils  boolean x   true     int y  BooleanUtils toInteger x

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If true - gt  1 and false - gt  0 mapping is what you want  you can do   boolean b   true  int i   b   1   0     assigns 1 to i

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public static int convBool boolean b    int convBool   0  if b  convBool   1  return convBool      Then use    convBool aBool

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public int boolToInt boolean b        return b   1   0      simple

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int myInt   myBoolean   1   0        PS   true   1 and false   0

[java] Convert boolean to int in Java

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