Conversión de tipo automática y conversión de tipo forzado en Java

Precisión de Java de mayor a menor: doble-> flotante-> largo-> int-> corto-> char-> byte

public class Demo {
  public static void main(String[] args) {
    byte b = 127;
    char c = 'Q';
    short s = 23561;
    int i =3333;
    long l = 20000L;
    float f = 3.1415f;
    double d = 54.523;

    System.out.println("========================\n低类型向高类型自动转换");
    System.out.println("累加byte等于：" + b);
    System.out.println("累加char等于：" + (b + c));
    System.out.println("累加short等于：" + (b + c + s));
    System.out.println("累加int等于：" + (b + c + s + i));
    System.out.println("累加long等于：" + (b + c + s + i + l));
    System.out.println("累加float等于：" + (b + c + s + i + l + f));
    System.out.println("累加double等于：" + (b + c + s + i + l + f + d));

    System.out.println("========================\n高类型向低类型强制转化(注意会有精度丢失问题)");
    System.out.println("double——>float：" + (float)d);
    System.out.println("float——>long：" + (long)f);
    System.out.println("long——>int：" + (int)l);
    System.out.println("int——>short：" + (short)i);
    System.out.println("short——>char：" + (char)s);
    System.out.println("char——>byte：" + (byte)c);
  }
}