Given the code fragment:
What is the result?
A.
Element 0
Element 1
B.
Null element 0
Null element 1
C.
Null
Null
D.
A NullPointerException is thrown at runtime.
What is the result?
Given the code fragment:
What is the result?
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D
Answer: D
package q067;
public class Test {
public static void main(String[] args) {
String[] strs = new String[2];
int idx = 0;
for (String s : strs) {
strs[idx].concat(” element “+ idx);
idx++;
}
for (idx = 0; idx < strs.length; idx++) {
System.out.println(strs[idx]);
}
}
}
/*Output:
Exception in thread "main" java.lang.NullPointerException
at q067.Test.main(Test.java:9)
*/
D