Place the correct description of the compiler output on the code fragments to be inserted at lines 4 and 5 The same compiler output may be used more than once 1. import java.util.*; 2. public class X { 3. public static void main(String[] args) { 4 . /* insert, code here*/ 5. /* insert code here */ 6. } 7. public static void foo(List < Object > list) { 8. } } Code Compiler Output 1 . ArrayList < Strinq > x1 = new ArrayList < String > ( ); foo(x1); A) Compilation Succeeds 2. ArrayList < Object > x2 = new ArrayList ( ); foo(x2); B) Compilation fails due to an error in the first statement. 3. ArrayList < Object > x3 = new ArrayList ( ); foo(x3); C) Compilation of the first statement succeeds. but compilation fails due to an error in the second statement; 4. ArrayList x4 = new ArrayList ( ); foo(x4);

Correct Answer is : 1-C, 2-B, 3-A, 4-A

Collections and Generics

Question : 10 of 53

Marks: +1, -0

Place the correct description of the compiler output on the code fragments to be inserted at lines 4 and 5 The same compiler output may be used more than once

1. import java.util.*; 
2. public class X { 
3. public static void main(String[] args) { 
4 . /* insert, code here*/ 
5. /* insert code here */ 
6. } 
7. public static void foo(List < Object > list) { 
8. }  
}

Code	Compiler Output
1 . `ArrayList < Strinq > x1 = new ArrayList < String > ( ); foo(x1);`	A) Compilation Succeeds
2. `ArrayList < Object > x2 = new ArrayList < String > ( ); foo(x2);`	B) Compilation fails due to an error in the first statement.
3. `ArrayList < Object > x3 = new ArrayList < Object > ( ); foo(x3);`	C) Compilation of the first statement succeeds. but compilation fails due to an error in the second statement;
4. `ArrayList x4 = new ArrayList ( ); foo(x4);`

1-C, 2-B, 3-A, 4-A
1-B, 2-C, 3-A, 4-A
1-A, 2-B, 3-A, 4-C
1-C, 2-B, 3-C, 4-A

Validate

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