Practice Language Fundamentals –
What will be the output of the program?
class Q207 {
public static void main(String[] args) {
int i1 = 5;
int i2 = 6;
String s1 = "7";
System.out.println(i1 + i2 + s1); /* Line 8 */
}
}
Practice Language Fundamentals –
What will be the output of the program?
public class Test178 {
public static void main(String[] args) {
String s = "foo";
Object o = (Object)s;
if (s.equals(o)) {
System.out.print("AAA");
}
else {
System.out.print("BBB");
}
if(o.equals(s)) {
System.out.print("CCC");
}
else {
System.out.print("DDD");
}
}
}
What will be the output of the program?
String x = ne
Practice Language Fundamentals –
What will be the output of the program?
String x = new String("xyz");
String y = "abc";
x = x + y; How many String objects have been created?
Given a method in a protected class, what access modifier do you us
Practice Language Fundamentals –
Given a method in a protected class, what access modifier do you use to restrict access to that method to only the other members of the same class?
Which of the following class level (nonlocal) variable declarations
Practice Language Fundamentals –
Which of the following class level (nonlocal) variable declarations will not compile?
You want a class to have access to members of another class in the
Practice Language Fundamentals –
You want a class to have access to members of another class in the same package. Which is the most restrictive access that accomplishes this objective?
What is the most restrictive access modifier that will allow member
Practice Language Fundamentals –
What is the most restrictive access modifier that will allow members of one class to have access to members of another class in the same package?
You want subclasses in any package to have access to members of a s
Practice Language Fundamentals –
You want subclasses in any package to have access to members of a superclass. Which is the most restrictive access that accomplishes this objective?
Practice Flow Control –
What will be the output of the program?
boolean bool = true;
if(bool = false) /* Line 2 */ {
System.out.println("a");
} else if(bool) /* Line 4 */ {
System.out.println("b");
} else if(!bool) /* Line 6 */ {
System.out.println("c"); /* Line 7 */
} else {
System.out.println("d");
}
Practice Flow Control –
What will be the output of the program?
public class If2 {
static boolean b1, b2;
public static void main(String [] args) {
int x = 0;
if ( !b1 ) /* Line 7 */ {
if ( !b2 ) /* Line 9 */ {
b1 = true;
x++;
if ( 5 > 6 ) {
x++;
}
if ( !b1 )
x = x + 10;
else if ( b2 = true ) /* Line 19 */
x = x + 100;
else if ( b1 | b2 ) /* Line 21 */
x = x + 1000;
}
}
System.out.println(x);
}
}
Practice Flow Control –
What will be the output of the program?
public void foo( boolean a, boolean b) {
if(a) {
System.out.println("A"); /* Line 3 */
}
else if(a && b) { /* Line 5 */
System.out.println( "A && B");
}
else {/* Line 8 */
if ( !b ) {
System.out.println( "notB") ;
}
else {
System.out.println( "ELSE" ) ;
}
}
}
Practice Flow Control –
What will be the output of the program?
class Test {
public static void main(String [] args) {
int i = 0;
while(1) {
if(i == 4) {
break;
}
++i;
}
System.out.println("i = " + i);
}
}
Practice Flow Control –
What will be the output of the program?
lass Test {
public static void main(String [] args) {
int I = 0;
outer: while (true) {
I++;
inner: for (int j = 0; j < 10; j++) {
I += j;
if (j == 3)
continue inner;
break outer;
}
continue outer;
}
System.out.println(I);
}
}
public class While {
pub
Practice Flow Control –
public class While {
public void loop() {
int x= 0;
while ( 1 ) { /* Line 4 */
System.out.print("x plus one is " + (x + 1)); /* Line 5 */
}
}
} Which statement is true?
Practice Flow Control –
What will be the output of the program?
int i = 1, j = 10;
do {
if(i++ > --j) /* Line 4 */{
continue;
}
} while (i < 5);
System.out.println("i = " + i + "and j = " + j); /* Line 9 */