算术运算 加(+)、减(-)丶乘(*)丶除(/)、余 除运算符(%) System. out. printIn (1+2* 3) System. out. printIn (1+2+3 /4) System. out. printIn(double)(1+2+ 3)/4)算术运算 • 加(+)、减(-)、乘(*)、除(/)、余 除运算符(%) – System.out.println(1 + 2 * 3); – System.out.println(1+2+3 / 4); – System.out.println((double)(1+2+3) / 4);