基本运算符
%：取余 模运算
！= ：不等于
package operator;
public class Demo01 {
public static void main(String[] args) {
//二元运算
//ctrl + D :复制当前行到下一行
int a = 10;
int b = 20;
int c = 25;
int d = 25;
System.out.println(a+b);
System.out.println(a-b);
System.out.println(a*b);
System.out.println(a/(double)b);
}
}
package operator;
public class Demo02 {
public static void main(String[] args) {
long a =123123123123l;
int b =123;
short c =10;
byte d = 8;
System.out.println(a+b+c+d); //Long
System.out.println(b+c+d); //Int
System.out.println(c+d); //Int
}
}
package operator;
public class Demo03 {
public static void main(String[] args) {
//关系运算符返回的结果 ： 正确 ， 错误 布尔值
// if
int a =10 ;
int b = 20;
int c =21;
//取余：模运算
System.out.println(c%a); // c / a 21 / 10 =2 …… 1
System.out.println(a>b);
System.out.println(a<b);
System.out.println(a==b);
System.out.println(a!=b);
}
}
