指定、算數、單元運算子
最簡單的指定運算子 Assignment Operator
int value;
value = 10; // 指定10 給value這個變數。算數運算子 Arithmetic Operators
int a = 10;
int b = 7;
String str = "Hello";
String str2 = "Java";
System.out.println(a+b);
System.out.println(a-b);
System.out.println(a*b);
System.out.println(a/b);
System.out.println(a%b);
System.out.println(str+str2);合併
單元運算子 Unary Operators
遞增/遞減運算子的前綴(prefix)後綴(postfix)差異
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