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In this ICSE practice test all the topics of java for ICSE computer application has been covered.
ICSE Practice test
- State the output of the following program segment: [2]
String str1=”great”;
String str2=”minds”; System.out.println(str1.substring(0,2).concat(str2.substring(1)));
System.out.println(“WH”+(str1.substring(2).toUpperCase())));
- State the values stored in the variables str1 and str2 [2]
String s1=”good”;
String s2=”world matters”;
String str1=s2.substring(5).replace(‘t’,’n’);
String str2=s1.concat(str1);
- What is the data type that the following functions return ? [2]
i) isWhitespace(char ch);
ii) random();
- State the output of the following program segment. [2]
String s= "Examination";
int n= s.length();
System.out.println(s.startsWith(s.substring(5,n)));
System.out.println(s.charAt(2)== s.charAt(6));
- State the method that: [2]
i) Converts a string to a primitive float data type
ii) Determines if the specified character is an uppercase character.
Program 1:
Design a class to overload a function Joystring( ) as follows: [ 15 ]
- i) void Joystring(String s, char ch1, char ch2) with one string argument and two character arguments that replaces the character argument ch1 with the character argument ch2 in the given string s and prints the new string.
Example:-
Input value of s = “TECHNALAGY”
ch1=’A’ ch2=’O’
Output: “TECHNOLOGY”
- ii) void Joystring(String s) with one string argument that prints the position of the first space and last space of the given string s.
Example:-
Input value of s = “Cloud computing means Internet based computing”
Output: First index : 5
Second index:36
iii) void Joystring(String s1, String s2) with two String arguments that combines the 2 strings with a space between them and prints the resultant string.
Example:
Input value ofs1= “COMMON WEALTH”
Input value ofs2= “GAMES”
Output: COMMON WEALTH GAMES (use library functions)
ICSE Practice test