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JAVA Strings

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

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

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JAVA Strings
What will be output?String S1 = "S1 ="+ "123"+"456";String S2 = "S2 ="+(123+456);

S1=123456, S2=579
S1=123456,S2=123456
None of This
S1=579,S2=579

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JAVA Strings
The output of the following fraction of code ispublic class Test{ public static void main(String args[]){ String s1 = new String("Hello");String s2 = new String("Hellow");System.out.println(s1 = s2);}}

Throws an exception
Compilation error
None of these
Hellow
Hello

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JAVA Strings
Determine output:public class Test{ public static void main(String args[]){ String str = null; if(str.length() == 0){ System.out.print("1"); } else if(str == null){ System.out.print("2"); } else{ System.out.print("3"); } }}

"3" is printed.
"1" is printed.
Compilation fails.
An exception is thrown at runtime.
"2" is printed.

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

onetwo
twoone
two
None of these
one

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

false
-1
1
true
0

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