JDK中進制轉換

/**
 * Date: 2010-11-9
 * Author <a href="mailto:[email protected]">marlboro</a>
 */
public class JdkHex {
    public static void main(String[] args) {
        //Integer
        int i = 6789;
        System.out.println("i==:" + i);
        // 十進制轉二進制
        String bin = Integer.toBinaryString(i);
        // 十進制轉八進制
        String oct = Integer.toOctalString(i);
        // 十進制轉十六進制
        String hex = Integer.toHexString(i);
        // 十進制轉三進制或者任何你想要的35進制一下的進制
        String ry = Integer.toString(i, 3);

        System.out.println("bin i ==:" + bin);
        System.out.println("oct i ==:" + oct);
        System.out.println("hex i ==:" + hex);
        System.out.println("ry i ==:" + ry);


        long j = Long.MAX_VALUE;
        System.out.println("j==:" + j);
        String bin_l = Long.toBinaryString(j);
        String oct_l = Long.toOctalString(j);
        String hex_l = Long.toHexString(j);
        String ry_l = Long.toString(j, 4);

        long jj = Long.parseLong("7FFFFFFFFFFFFFFF", 16);
        long kk = Long.valueOf("7FFFFFFFFFFFFFFF", 16);

        String ll = String.format("%d", j);
        String lll = String.format("%o", j);
        String llll = String.format("%x", j);
        String lllll = String.format("%X", j);

        System.out.println("ll==:" + ll);
        System.out.println("lll==:" + lll);
        System.out.println("llll==:" + llll);
        System.out.println("lllll==:" + lllll);


        System.out.println("jj ==:" + jj);
        System.out.println("kk ==:" + kk);
        System.out.println("bin j ==:" + bin_l);
        System.out.println("oct j ==:" + oct_l);
        System.out.println("hex j ==:" + hex_l.toUpperCase());
        System.out.println("ry j ==:" + ry_l);

        System.out.println("" + Long.MAX_VALUE);

    }
}