Top Java Quiz Questions ☕️

LocalDate date = LocalDate.parse("2018-04-30", DateTimeFormatter.ISO_LOCAL_
DATE);
date.plusDays(2);
date.plusHours(3);
System.out.println(date.getYear() + " " + date.getMonth() + " "
+ date.getDayOfMonth());

List<String> one = new ArrayList<String>();
one.add("abc");
List<String> two = new ArrayList<>();
two.add("abc");
if (one == two)
 System.out.println("A");
else if (one.equals(two))
 System.out.println("B");
else
 System.out.println("C");

13: String a = "";
14: a += 2;
15: a += 'c';
16: a += false;
17: if ( a == "2cfalse") System.out.println("==");
18: if ( a.equals("2cfalse")) System.out.println("equals");

3: String s = "purr";
4: s.toUpperCase();
5: s.trim();
6: s.substring(1, 3);
7: s += " two";
8: System.out.println(s.length());

public class Lion {
 public void roar(String roar1, StringBuilder roar2) {
 roar1.concat("!!!");
 roar2.append("!!!");
 }
public static void main(String[] args) {
 String roar1 = "roar";
 StringBuilder roar2 = new StringBuilder("roar");
 new Lion().roar(roar1, roar2);
 System.out.println(roar1 + " " + roar2);
} }

3: final char a = 'A', d = 'D';
4: char grade = 'B';
5: switch(grade) {
6: case a:
7: case 'B': System.out.print("great");
8: case 'C': System.out.print("good"); break;
9: case d:
10: case 'F': System.out.print("not good");
11: }

3: int m = 9, n = 1, x = 0;
4: while(m > n) {
5: m--;
6: n += 2;
7: x += m + n;
8: }
9: System.out.println(x);

3: boolean keepGoing = true;
4: int result = 15, i = 10;
5: do {
6: i--;
7: if(i==8) keepGoing = false;
8: result -= 2;
9: } while(keepGoing);
10: System.out.println(result);

3: do {
4: int y = 1;
5: System.out.print(y++ + " ");
6: } while(y <= 10);

3: int x = 1, y = 15;
4: while x < 10
5: y––;
6: x++;
7: System.out.println(x+", "+y);