source code Long class

package wclasses;

public class SampleLong {
    public static void main(String att[])
    {
        //constructors
        Long l1= new Long(10);
        Long l2= new Long("10");

        // wrapper to primitive
        int pl1=l1.intValue();
        long l0=l1.longValue();
        System.out.println(pl1);

        //binary,octa,hexa notations.
        String bin=Long.toBinaryString(10);
        System.out.println(bin);
        String oct=Long.toOctalString(12);
        System.out.println(oct);
        String hex=Long.toHexString(12);
        System.out.println(hex);

        //primitive to string
        String s1=l1.toString();
        String s2=Long.toString(10);
        System.out.println(s1);
        System.out.println(s2);
        
        //String to primitive
        long pl2=Long.parseLong(s2);
        System.out.println(pl2);
        
        //String to wrapper object
        Long l3= new Long("10");
        Long l4=Long.valueOf("100");
        System.out.println(l3);
        System.out.println(l4);

        //wrapper to string
        String s3=l4.toString();
        
        
    }
}

output:
10
1010
14
c
10
10
10
10
100