Java 语言支持如下运算符:
-
算数运算符:+, -, *, /, %, ++, --
-
赋值运算符=
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关系运算符:>, <, >=, <=, ==, != instanceof
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逻辑运算符:&&, ||, !
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位运算符:&, |, ^, ~, >>, <<, >>>(了解!!!)
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条件运算符:?
-
扩展赋值运算符:+=, -=, *=, /=
public class Demo01 {
public static void main(String[] args) {
//二元运算符
//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); //÷余有小数注意范围
public class Demo02 {
public static void main(String[] args) {
long a = 123346565L;
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
}
}
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
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);
}
}