Pourquoi ne pas tenir#39;t Java paramètre#39;s +=, -=, *=, /= les opérateurs d'assignation de composés le font

92

short x = 3; x += 4.6; 

short x = 3; x = (short)(x + 4.6); 

88

byte b = 10; b *= 5.7; System.out.println(b); // prints 57 

byte b = 100; b /= 2.5; System.out.println(b); // prints 40 

char ch = '0'; ch *= 1.1; System.out.println(ch); // prints '4' 

char ch = 'A'; ch *= 1.5; System.out.println(ch); // prints 'a' 

78

short x = 3; x += 4.6; 

short x = 3; x = (short)(x + 4.6); 

64

i += l;  

i = (int)(i + l); 

51

i = i + (int)l; 

i = (int)((long)i + l); // this is what happens in case of += , dont need (long) casting since upper casting is done implicitly.