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 char c = 'E';

byte b = byte(c);

println(c + " : " + b);

// Prints "E : 69" 
int i = 130;

b = byte(i);

println(i + " : " + b);

// Prints "130 : -126" 
描述 Converts any value of a primitive data type (boolean, byte, char, color, double, float, int, or long) to its byte representation. A byte can only be a whole number between -128 and 127, so when a value outside of this range is converted, it wraps around to the corresponding byte representation. (For example, byte(128) evaluates to -128.)

When an array of values is passed in, then a byte array of the same length is returned.

Updated on October 2, 2018 05:02:16pm EDT