StringToBoolean.java

public class StringToBoolean {

    public static void main(String[] args) {
        String s1 = "true";
        boolean b1 = Boolean.parseBoolean(s1);
        System.out.println(b1);

        String s2 = "TRUE";
        boolean b2 = Boolean.parseBoolean(s2);
        System.out.println(b2);

        String s3 = "yes";
        boolean b3 = Boolean.parseBoolean(s3);
        System.out.println(b3);
    }
}