boolean b = ....; 
int i = -("false".indexOf("" + b));

public int boolToInt(boolean b) {
    return b ? 1 : 0;
}

简单的

int myInt = myBoolean ? 1 : 0;

^^

PS: true = 1, false = 0

如果true -> 1和false -> 0映射是你想要的，你可以这样做:

boolean b = true;
int i = b ? 1 : 0; // assigns 1 to i.

boolean b = ....; 
int i = -("false".indexOf("" + b));

int val = b? 1 : 0;