Question

How to define a terabyte constant in Java

Answer 1

public class TerabyteExample {

    /**
        Java's long type is a signed 64‑bit integer.
        Maximum value: 9,223,372,036,854,775,807 (~9.22 × 10^18)

        Terabyte sizes:

            1 TiB = 2^40  = 1,099,511,627,776 bytes
            1 TB  = 10^12 = 1,000,000,000,000 bytes

        Both values fit safely inside a long.
    */

    // Binary terabyte (tebibyte), using a bit shift.
    // 1L << 40 = 2^40 bytes.
    public static final long TERABYTE_TIB = 1L << 40;

    // Decimal terabyte (SI), using a readable numeric literal.
    public static final long TERABYTE_TB = 1_000_000_000_000L;

    public static void main(String[] args) {
        System.out.println("1 TiB = " + TERABYTE_TIB + " bytes");
        System.out.println("1 TB  = " + TERABYTE_TB  + " bytes");
    }
}



/*
run:

1 TiB = 1099511627776 bytes
1 TB  = 1000000000000 bytes

*/

 

70+ SQL courses for beginners and professionals