To convert a string into boolean we can use the Boolean.parseBoolean(String) method. If we pass a non null value that equals to true, ignoring case, this method will return true value. Given other values it will return a false boolean value.

package org.kodejava.lang;

public class BooleanParseExample {
    public static void main(String[] args) {
        // Parsing string "true" will result boolean true
        boolean boolA = Boolean.parseBoolean("true");
        System.out.println("boolA = " + boolA);

        // Parsing string "TRUE" also result boolean true, as the
        // parsing method is case insensitive
        boolean boolB = Boolean.parseBoolean("TRUE");
        System.out.println("boolB = " + boolB);

        // The operation below will return false, as Yes is not
        // a valid string value for boolean expression
        boolean boolC = Boolean.parseBoolean("Yes");
        System.out.println("boolC = " + boolC);

        // Parsing a number is also not a valid expression so the
        // parsing method return false
        boolean boolD = Boolean.parseBoolean("1");
        System.out.println("boolD = " + boolD);
    }
}

The code snippet above will print the following output:

boolA = true
boolB = true
boolC = false
boolD = false

• Author
• Recent Posts

Wayan

Founder at Kode Java Org

A programmer, runner, recreational diver, live in the island of Bali, Indonesia. Programming in Java, Spring, Hibernate / JPA. If this post help, you can support me, buy me a cup of coffee or tea 🥳

Latest posts by Wayan (see all)

• How do I connect to ssh server using JSch? - January 5, 2022
• How do I mail merge Word document in Java? - June 17, 2021
• How do I format EditText for currency input in Android? - May 21, 2021