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JAVA Strings

JAVA Strings
What will be the output?String str1 = "abcde";System.out.println(str1.substring(1, 3));

bc
None of these
bcd
abcd
abc

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JAVA Strings
What will be the output?public class Test{ public static void main (String[] args){ String test = "a1b2c3"; String[] tokens = test.split("\\d"); for(String s: tokens) System.out.print(s); } }

123
Compilation error
Runtime exception thrown
abc

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JAVA Strings
The String method compareTo() returns

1
an int value
false
true
-1

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

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

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JAVA Strings
What will be the output of the following program code?public class Test{ public static void main(String args[]){ String s = "what"; StringBuffer sb = new StringBuffer("what"); System.out.print(sb.equals(s)+","+s.equals(sb)); }}

false,true
true,false
true,true
None of these
false,false

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JAVA Strings
What will be the output of the following program code?class LogicalCompare{ public static void main(String args[]){ String str1 = new String("OKAY"); String str2 = new String(str1); System.out.println(str1 == str2); }}

0
Displays error message
1
true
false

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