//定义a,b的值 int a = 4; a++; //自增a的变量 +1 System.out.println(a);//输出 5 int b = 12; b--; //自减b的量 +1 System.out.println(b); //输出得到11 a++先用后加 a--先加后用
// 定义a\b\c的值 int a = 4; int b = 8; int c = 2; int x = a += b ; //将a+b的值赋值给x 12 int y = x - c; //x-c的值再赋值给y 10 System.out.println(y); //输出Y 在运算的同时赋值 更方便快捷 另外还有* / %
int a = 2; //定义变量 int b = 4; boolean ab = (a > b); //判断a是否大于b System.out.println(ab); //输出 false 还有< / <=/ >= / == /！= 比如 boolean ab = (a == b); //判断ab是否相同 System.out.println(ab); //输出 false boolean ab = (a ！= b); //判断ab是否不相等 System.out.println(ab); //输出true
int a = 2; //定义变量 int b = 4; boolean ab = (a > b); //判断a是否大于b System.out.println(ab); //输出 false 还有< / <=/ >= / == /！= 比如 boolean ab = (a == b); //判断ab是否相同 System.out.println(ab); //输出 false boolean ab = (a ！= b); //判断ab是否不相等 System.out.println(ab); //输出true
