java基本运算符解析(1)
时间:2021-03-01 13:30:50
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基本加减乘除间运算
public class Demo1 {
public static void main(String[] args) {
int a = 20;
int b = 30;
int c = 40;
int d = 25;
System.out.println(a+b);
System.out.println(a-b);
System.out.println(a*b);
System.out.println((double) c/d); //如果不进行强制转换小数后省略
}
}
long以上容量的转换
public class Demo2 {
public static void main(String[] args) {
double a= 20.4;
float b = 30.4f;
long c = 20;
byte ff = 127;
byte f = 127;
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System.out.println(ff+f); //在进行运算时,long以下自动转化为int,
// long以上如果出现更高容量转为更高容量进行运算
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}
}
>,<,==,!=,%
public class Demo3 {
public static void main(String[] args) {
int a = 10;
int b = 20;
int c = 30;
int d = 21;
System.out.println(a>b);
System.out.println(d%a);
System.out.println(d%b);
System.out.println(d%c); //%取余数运算
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}
}
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