Java 조건문과 반복문

조건문

if 문

int score = 90;
if (score >= 90) {
    System.out.println("Grade A");
}

if else 문

if (score >= 90) {
    System.out.println("Grade A");
} else {
    System.out.println("Grade F");
}

else if 문

if (score >= 90) {
    System.out.println("Grade A");
} else if(score >= 80) {
    System.out.println("Grade B");
} else if(score >= 70) {
    System.out.println("Grade C");
} else {
    System.out.println("Grade F");
}

switch 문

int num = 1;
switch(num) {
case 1:
    System.out.println("1");
    break;
case 2:
    System.out.println("2");
    break;
case 3:
    System.out.println("3");
    break;
case 4:
    System.out.println("4");
    break;
default:
    System.out.println("5");
    break;
}

---

반복문

for 문

int sum = 0;
for (int i = 1; i <= 100; i++) {
    sum = sum + i;
}

while 문

int intValue10 = 1;
while (intValue10 <= 10) {
    System.out.println(intValue10);
    intValue10++;
}

do-while 문

Scanner scanner = new Scanner(System.in);	// import java.util.Scanner;
String inputString;
do {
    System.out.println(">");
    inputString = scanner.nextLine();
    System.out.println(inputString);
} while(!inputString.equals("q"));

break, continue문

for(int i = 1; i <= 10; i++) {
    if(i % 2 != 0) {
        continue;
    } else if(i == 5) {
        break;
    }
    System.out.println(i);
}