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How to convert a string to a boolean in Java

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Overview

We can convert a string to a Boolean value in Java using the Boolean class. We do this by passing the string to its constructor statement.

Syntax

Boolean booleanVariable = new Boolean(string)
The syntax to convert a string to Boolean in Java

Parameters

  • Boolean: This is the Boolean class whose constructor will be used to convert a string to a boolean.
  • booleanVariable: This is the variable's name that will contain the converted string.
  • new: This is the keyword used to create a new instance or the new Boolean value.
  • string: This is the string value we want to convert to a Boolean value.

Return value

The value returned is a Boolean, which is equivalent to the string.

Example

class HelloWorld {
    public static void main( String args[] ) {
        // create some strings
        String str1 = "true";
        String str2 = "false";
        String str3 = "1";
        String str4 = "0";

        // Convert using constructor
        Boolean bool1 = new Boolean(str1);
        Boolean bool2 = new Boolean(str2);
        Boolean bool3 = new Boolean(str3);
        Boolean bool4 = new Boolean(str4);

        // print results
        System.out.println("Boolean value is : " +bool1);
        System.out.println("Boolean value is : " +bool2);
        System.out.println("Boolean value is : " +bool3);
        System.out.println("Boolean value is : " +bool4);
    }
}
Convert a string to a Boolean in Java

Explanation

  • Lines 4-7: We create some strings.
  • Lines 10-13: We convert the strings to Boolean values.
  • Lines 16-19: We print the results to the console screen.

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boolean
java
communitycreator
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