Comment faire une conversion de base en Java

Il s'agit d'une méthode permettant d'effectuer une conversion de base en Java. Comme il n'utilise que la bibliothèque standard, vous pouvez la copier et la coller immédiatement.

Convertir en binaire

Binaire-> 8

Java

final String bin = "11111110";
final int dec = Integer.parseInt(bin, 2);
final String oct = Integer.toOctalString(dec);
System.out.println(oct);

production

376

Binaire-> Décimal

Java

final String bin = "11111110";
final int dec = Integer.parseInt(bin, 2);
System.out.println(dec);

production

254

Binaire-> Hexagone

Java

final String bin = "11111110";
final int dec = Integer.parseInt(bin, 2);
final String hex = Integer.toHexString(dec);
System.out.println(hex);

production

fe

Binaire-> 32 bases

Java

final String bin = "11111110";
final int dec = Integer.parseInt(bin, 2);
final String base32 = Integer.toString(dec, 32);
System.out.println(base32);

production

7u

Binaire-> n-aire

Java

final String bin = "11111110";
final int dec = Integer.parseInt(bin, 2);
final int n = 36;
final String base36 = Integer.toString(dec, n);
System.out.println(base36);

production

72

Convertir à partir du nombre octal

Huit-> binaire

Java

final String oct = "376";
final int dec = Integer.parseInt(oct, 8);
final String bin = Integer.toBinaryString(dec);
System.out.println(bin);

production

11111110

Nombre de 8 bases-> nombre décimal

Java

final String oct = "376";
final int dec = Integer.parseInt(oct, 8);
System.out.println(dec);

production

254

8 bases-> hexadécimal

Java

final String oct = "376";
final int dec = Integer.parseInt(oct, 8);
final String hex = Integer.toHexString(dec);
System.out.println(hex);

production

fe

8 bases -> 32 bases

Java

final String oct = "376";
final int dec = Integer.parseInt(oct, 8);
final String base32 = Integer.toString(dec, 32);
System.out.println(base32);

production

7u

8-base-> n-aire

Java

final String oct = "376";
final int dec = Integer.parseInt(oct, 8);
final int n = 36;
final String base36 = Integer.toString(dec, n);
System.out.println(base36);

production

72

Convertir à partir d'un nombre décimal

Refuser-> Binaire

Java

final int dec = 254;
final String bin = Integer.toBinaryString(dec);
System.out.println(bin);

production

11111110

Décalque-> octal

Java

final int dec = 254;
final String oct = Integer.toOctalString(dec);
System.out.println(oct);

production

376

Déclin-> Hexagone

Java

final int dec = 254;
final String hex = Integer.toHexString(dec);
System.out.println(hex);

production

fe

Déclin-> 32-aire

Java

final int dec = 254;
final String base32 = Integer.toString(dec, 32);
System.out.println(base32);

production

7u

Déclin-> n-aire

Java

final int dec = 254;
final int n = 36;
final String base36 = Integer.toString(dec, n);
System.out.println(base36);

production

72

Convertir à partir de l'hexadécimal

Hexagone-> Binaire

Java

final String hex = "fe";
final int dec = Integer.parseInt(hex, 16);
final String bin = Integer.toBinaryString(dec);
System.out.println(bin);

production

11111110

Hexa-> octal

Java

final String hex = "fe";
final int dec = Integer.parseInt(hex, 16);
final String oct = Integer.toOctalString(dec);
System.out.println(oct);

production

376

Hexa-> décimal

Java

final String hex = "fe";
final int dec = Integer.parseInt(hex, 16);
System.out.println(dec);

production

254

Hexagone-> 32 base

Java

final String hex = "fe";
final int dec = Integer.parseInt(hex, 16);
final String base32 = Integer.toString(dec, 32);
System.out.println(base32);

production

7u

Déclin-> n-aire

Java

final String hex = "fe";
final int dec = Integer.parseInt(hex, 16);
final int n = 36;
final String base36 = Integer.toString(dec, n);
System.out.println(base36);

production

72

Convertir à partir de la base 32

32-base-> binaire

Java

final String base32 = "7u";
final int dec = Integer.parseInt(base32, 32);
final String bin = Integer.toBinaryString(dec);
System.out.println(bin);

production

11111110

32-base-> nombre octal

Java

final String base32 = "7u";
final int dec = Integer.parseInt(base32, 32);
final String oct = Integer.toOctalString(dec);
System.out.println(oct);

production

376

32 base-> décimal

Java

final String base32 = "7u";
final int dec = Integer.parseInt(base32, 32);
System.out.println(dec);

production

254

32 bases-> hexadécimal

Java

final String base32 = "7u";
final int dec = Integer.parseInt(base32, 32);
final String hex = Integer.toHexString(dec);
System.out.println(hex);

production

fe

32-base-> n-aire

Java

final String base32 = "7u";
final int dec = Integer.parseInt(base32, 32);
final int n = 36;
final String base36 = Integer.toString(dec, n);
System.out.println(base36);

production

72

Convertir à partir de n-aire

n-aire-> binaire

Java

final String base36 = "72";
final int n = 36;
final int dec = Integer.parseInt(base36, n);
final String bin = Integer.toBinaryString(dec);
System.out.println(bin);

production

11111110

n-aire-> octal

Java

final String base36 = "72";
final int n = 36;
final int dec = Integer.parseInt(base36, n);
final String oct = Integer.toOctalString(dec);
System.out.println(oct);

production

376

n-aire-> décimal

Java

final String base36 = "72";
final int n = 36;
final int dec = Integer.parseInt(base36, n);
System.out.println(dec);

production

254

n-aire-> hexadécimal

Java

final String base36 = "72";
final int n = 36;
final int dec = Integer.parseInt(base36, n);
final String hex = Integer.toHexString(dec);
System.out.println(hex);

production

fe

n-aire-> 32 bases

Java

final String base36 = "72";
final int n = 36;
final int dec = Integer.parseInt(base36, n);
final String base32 = Integer.toString(dec, 32);
System.out.println(base32);

production

7u

n-aire-> m-aire

Java

final String base36 = "72";
final int n = 36;
final int dec = Integer.parseInt(base36, n);
final int m = 3;
final String base3 = Integer.toString(dec, m);
System.out.println(base3);

production

100102