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JAVA Strings

JAVA Strings
The String method compareTo() returns

false
true
-1
1
an int value

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JAVA Strings
What could be output of the following fragment of code?public class Test{ public static void main(String args[]){ String x = "hellow";int y = 9;System.out.println(x += y); } }

hellow9
Throws an exception as string and int are not compatible for addition
None of these
Compilation error
9hellow

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JAVA Strings
What is the output of the following println statement?String str1 = "Hellow";System.out.println(str1.indexOf('t'));

-1
1
true
false
0

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JAVA Strings
String str1 = "Kolkata".replace('k', 'a');In the above statement, the effect on string Kolkata is

All characters k are replaced by a.
All characters a are replaced by k.
Displays error message
The first occurrence of k is replaced by a.

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JAVA Strings
How many Constructor String class have?

11
None of this
13
7
2

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JAVA Strings
The class string belongs to ................. package.

java.string
java.awt
java.lang
java.applet

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