Java Data Type - 如何声明十六进制整数文本

Put 0x or 0X in front of the numbers.

 
Use the letters A to F (or a to f) to represent digits with values 10 to 15, respectively.

public class MainClass {

  public static void main(String[] a) {
    int hexValue1 = 0x100;
    int hexValue2 = 0x1234;
    int hexValue3 = 0xDEAF;
    int hexValue4 = 0xCAB;

    System.out.println(hexValue1);
    System.out.println(hexValue2);
    System.out.println(hexValue3);
    System.out.println(hexValue4);
  }

}