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QUESTION 73
Given the code fragment:
Which modification enables the code fragment to print TrueDone?
A. Replace line 5 With String result = “true”;
Replace line 7 with case “true”:
B. Replace line 5 with boolean opt = l;
Replace line 7 with case 1=
C. At line 9, remove the break statement.
D. Remove the default section.
Answer: A
Explanation:
Switch statements with String cases were implemented in Java SE 7.
QUESTION 74
Given the following main method:
What is the result?
A. 5 4 3 2 1 0
B. 5 4 3 2 1
C. 4 2 1
D. 5
E. Nothing is printed
Answer: D
Explanation:
The loop body executes only once because on the while condition num = 4.
When the execution reaches System.out.print, num = 5.
QUESTION 75
Given the code fragment:
What is the result?
A. 100
B. 101
C. 102
D. 103
E. Compilation fails
Answer: E
Explanation:
Compilation fails with error “: expected” because we have three ternary operators but only two colons.
QUESTION 76
Given:
What is the result?
A. 97 98
99 100 null null null
B. 91 98
99 100 101 102 103
C. Compilation rails
D. A NullPointerException is thrown at runtime
E. An ArraylndexOutOfBoundsException is thrown at runtime
Answer: A
Explanation:
When we exit first loop we have
chs[0][0] = 97
chs[0][1] = 98
chs[1][0] = 99
chs[1][1] = 100
chs[1][2] = null;
chs[1][3] = null;
chs[1][4] = null;
The second loop prints these values.
QUESTION 77
Given the code fragment:
Which two modifications, when made independently, enable the code to print joe:true: 100.0?
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
Answer: AC
QUESTION 78
View the exhibit:
public class Student {
public String name = “”;
public int age = 0;
public String major = “Undeclared”;
public boolean fulltime = true;
public void display() {
System.out.println(“Name: ” + name + ” Major: ” + major); }
public boolean isFullTime() {
return fulltime;
}
}
Which line of code initializes a student instance?
A. Student student1;
B. Student student1 = Student.new();
C. Student student1 = new Student();
D. Student student1 = Student();
Answer: C
QUESTION 79
What should keyword1 and keyword2 be respectively, in oreder to produce output 2345?
int [] array = {1,2,3,4,5};
for (int i: array) {
if ( i < 2) {
keyword1 ;
}
System.out.println(i);
if ( i == 3) {
keyword2 ;
}}
A. continue, break
B. break, break
C. break, continue
D. continue, continue
Answer: D
QUESTION 80
What is the result?
int i, j=0;
i = (3* 2 +4 +5 ) ;
j = (3 * ((2+4) + 5));
System.out.println(“i:”+ i + “\nj”:+j);
A. Option A
B. Option B
C. Option A
D. Option D
Answer: B
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