[이항 연산자]
(예시) System.out.println(4%3) // 4÷3의 나머지
(예시) String a = "Hello";
String b = "World";
String c = a + b;
System.out.println(c);
[단항 연산자]
int i = 3;
i++;
System.out.println(i); // 4
System.out.println(++i); // 5
System.out.println(i++); // 5
System.out.println(i); // 6
public static void main(String[] args) {
String a = "Hello world";
String b = new String("Hello world");
System.out.println(a == b); // false
System.out.println(a.equals(b)); // true
(예제) String id = args[0];
String password = args[1];
if ((id.equals("Rara") || id.equals("Double229")) && password.equals("1234")) {
System.out.println("Correct");
} else {
System.out.println("Check your id or passowrd");
}
(예제) public static void main(String[] args) {
if (!true) {
System.out.println(1);
}
if (!false) {
System.out.println(2);
}
}