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Core Java - Interview Questions and Answers for 'Character' - 10 question(s) found - Order By Rating | ||||
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Ans. String has an argument constructor that take char array as argument and creates a string. There is no constructor available with String that takes in a character and creates a String. We can use StringBuilder which has a char argument constructor. | ||||
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Like Discuss Correct / Improve  character  char  char array  String  char to String  char array to String | ||||
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Ans. 65 to 90 for capital case alphabets 97 to 122 for lower case alphabets | ||||
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Like Discuss Correct / Improve  ascii  character  char | ||||
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Ans. 1. We can compare the ascii value of the character. Ascii for Capital case character is from 65 to 90. 2. We can compare to see if lowerCase of the character is not equal to character itself. For example - if character is 'a' the following code new StringBuilder(char).toString().toLowerCase().equals(new StringBuilder(char) will return true and hence char is lower case if character is 'A' the following code new StringBuilder(char).toString().toLowerCase().equals(new StringBuilder(char) will return false and hence char is upper case | ||||
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Like Discuss Correct / Improve  check upper case character  character | ||||
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Ans. public class BuggyBread { public static void main(String args[]) { Map<Character, Integer> countMap = new HashMap(); String str = "hello world"; for (char character : str.toCharArray()) { if (countMap.containsKey(character)) { countMap.put(character, countMap.get(character) + 1); } else { countMap.put(character, 1); } } System.out.println(countMap); } } | ||||
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Like Discuss Correct / Improve  String  Code  Coding  Character Asked in 1 Companies | ||||
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Ans. Unicode requires 16 bits and ASCII require 7 bits. Although the ASCII character set uses only 7 bits, it is usually represented as 8 bits. UTF-8 represents characters using 8, 16, and 18 bit patterns. UTF-16 uses 16-bit and larger bit patterns. | ||||
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Like Discuss Correct / Improve  character coding   ascii   unicode   utf | ||||
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Ans. A way of encoding characters as binary numbers. The Unicode character set includes characters used in many languages, not just English. Unicode is the character set that is used internally by Java. | ||||
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Like Discuss Correct / Improve  java   character encoding   unicode   architecture | ||||
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Ans. A Stream is an abstraction that either produces or consumes information. There are two types of Streams : Byte Streams: Provide a convenient means for handling input and output of bytes. Character Streams: Provide a convenient means for handling input & output of characters. Byte Streams classes: Are defined by using two abstract classes, namely InputStream and OutputStream. Character Streams classes: Are defined by using two abstract classes, namely Reader and Writer. | ||||
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Like Discuss Correct / Improve  java   file io   streams   byte stream   character stream  file handling Asked in 3 Companies | ||||
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Ans. 16 bits | ||||
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Like Discuss Correct / Improve  java   character coding   character encoding | ||||
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Ans. The ascii value of a i.e 97 | ||||
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Like Discuss Correct / Improve  character  ascii | ||||
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Ans. It will result in compilation error as primitive char cannot be casted to Integer object, alternatively we can cast it to primitive int like following System.out.println((int)'a'); | ||||
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Like Discuss Correct / Improve  character  ascii | ||||