return 0; //returning a constant integer value
return x; //returning the value of x(assuming that x has previously been declared to be an int)
return x+y; //returning the value of the expression”x+y”(here,we`re assuming that “x+y” evaluates to an int value)
return (int)z; //casting the value of z(assume z was declared as a double to an int value)
3. 如果程序定义为具有boolean返回类型,那么下列任何一种return语句都可以接受:
return false; //returning a Boolean constant value
return outcome; //returning the value of variable outcome (assuming that outcome has previously been declared to be of type Boolean)
return(x<3); //returning the Boolean value that results when the value of x is compared to 3: if x if less than 3, this method returns a value of true; otherwise, it returns false.