Java - Online Test - Bizmatics - javasearch.buggybread.com

Java - Test Questions on 'Bizmatics' - 4 questions found

Which of the following class creates mutable objects ?

Reference

Core Java

Boolean

File

String

StringBuffer

_{java immutable}

When String literals are compared using ==, they always returns true if the string values are same because ..

Reference

Core Java

of overridden compareTo method

of overridden compare method

of String Pool

== means that the object contents are equal

In case of String Literals ..

Reference

Core Java

x==y on all literals always returns false

x.equals(y) on all literals always returns false

if x.equals(y) returns true, x==y returns true too

if x.equals(y) returns false, x==y returns true

What will be the output of following code ?

String str1 = "String1";
String str2 = "String2";
str1.concat("String3");
System.out.print(str1);
System.out.print(str2);

Core Java

String1String2

String1String3String3

String1String3String1String3

String1String1

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