Programming Articles - Page 2317 of 3366

The JSON-lib API is a java library to serialize and de-serialize java beans, maps, arrays, and collections in the JSON format. We need to convert a JSON string to a bean by converting a string to JSON object first then convert this to a java bean.Syntaxpublic static Object toBean(JSONObject jsonObject, Class beanClass)In the below program, we can convert a JSON string to a bean.Exampleimport net.sf.json.JSONObject; import net.sf.json.JSONSerializer; public class ConvertJSONStringToBeanTest {    public static void main(String[] args) {       String jsonStr = "{\"firstName\": \"Adithya\", \"lastName\": \"Sai\", \"age\": 30, \"technology\": \"Java\"}";       JSONObject jsonObj = (JSONObject)JSONSerializer.toJSON(jsonStr); // convert String ... Read More

The Char.IsSurrogatePair() method in C# is used to indicate whether two adjacent Char objects at a specified position in a string form a surrogate pair.SyntaxFollowing is the syntax −public static bool IsSurrogatePair (string str, int index);Above, the string str is a string, whereas the index is the starting position of the pair of characters to evaluate within str.ExampleLet us now see an example to implement the Char.IsSurrogatePair() method −using System; public class Demo {    public static void Main(){       string str = new String(new char[] { 'k', 'm', 'g', 't', '\uD800' });       bool res ... Read More

The Char.IsSurrogate() method in C# indicates whether the specified character has a surrogate code unit.SyntaxFollowing is the syntax −public static bool IsSurrogate (string str, int index);Above, the parameter str is the string, whereas the index is the position of the character to evaluate in str.ExampleLet us now see an example to implement the Char.IsSurrogate() method −using System; public class Demo {    public static void Main(){       string str = new String(new char[] { 'k', 'm', 'g', 't', '\uD800' });       bool res = Char.IsSurrogate(str, 4);       if (res)          Console.WriteLine("Contains ... Read More

The Char.IsSeparator() method in C# indicates whether the specified Unicode character is categorized as a separator character.SyntaxFollowing is the syntax −public static bool IsSeparator (char ch);Above. ch is the Unicode character to evaluate.ExampleLet us now see an example to implement the Char.IsSeparator() method −using System; public class Demo {    public static void Main(){       bool res;       char val = ', ';       Console.WriteLine("Value = "+val);       res = Char.IsSeparator(val);       Console.WriteLine("Is the value a separator? = "+res);    } }OutputThis will produce the following output −Value = , ... Read More

The Char.IsPunctuation() method in C# indicates whether the specified Unicode character is categorized as a punctuation mark.SyntaxFollowing is the syntax −public static bool IsPunctuation (char ch);Above, ch is the Unicode character to evaluate.ExampleLet us now see an example to implement the Char.IsPunctuation() method −using System; public class Demo {    public static void Main(){       bool res;       char val = 'q';       Console.WriteLine("Value = "+val);       res = Char.IsPunctuation(val);       Console.WriteLine("Is the value a punctuation? = "+res);    } }OutputThis will produce the following output −Value = q Is ... Read More

The MathF.Acos() method in C# is used to return the angle whose cosine is given as a float value argument.SyntaxFollowing is the syntax −public static float Acos (float val);Above, Val is the floating-point number.ExampleLet us now see an example to implement the MathF.Acos() method −using System; public class Demo {    public static void Main(){       float val1 = 0.1f;       float val2 = 0.9f;       Console.WriteLine("Angle (val1) = "+(MathF.Acos(val1)));       Console.WriteLine("Angle (val2) = "+(MathF.Acos(val2)));    } }OutputThis will produce the following output −Angle (val1) = 1.470629 Angle (val2) = 0.4510269ExampleLet us ... Read More

The MathF.Abs() method in C# is used to return the absolute value of a float number.SyntaxFollowing is the syntax −public static float Abs (float val);Above, the parameter Val is the specified float number.ExampleLet us now see an example to implement the MathF.Abs() method −using System; public class Demo {    public static void Main(){       float val1 = 20.5f;       float val2 = -89.5f;       Console.WriteLine("Absolute float value1 = "+(MathF.Abs(val1)));       Console.WriteLine("Absolute float value2 = "+(MathF.Abs(val2)));    } }OutputThis will produce the following output −Absolute float value1 = 20.5 Absolute float value2 ... Read More

The UInt64.MinValue field in C# represents the minimum value of the 64-bit unsigned integer.SyntaxFollowing is the syntax −public const ulong MinValue = 0;ExampleLet us now see an example to implement the UInt64.MinValue field −using System; public class Demo {    public static void Main(){       ulong val1 = 879879879;       ulong val2 = 464556565;       Console.WriteLine("Value1 = "+val1);       Console.WriteLine("Value2 = "+val2);       Console.WriteLine("HashCode for value1 = "+val1.GetHashCode());       Console.WriteLine("HashCode for value2 = "+val2.GetHashCode());       Console.WriteLine("Are they equal? = "+(val1.Equals(val2)));       TypeCode type1 = ... Read More

The UInt64.MaxValue field in C# represents the maximum value of the 64-bit unsigned integer.SyntaxFollowing is the syntax −public const ulong MaxValue = 18446744073709551615;ExampleLet us now see an example to implement the UInt64.MaxValue field −using System; public class Demo {    public static void Main(){       ulong val1 = 879879879;       ulong val2 = 464556565;       Console.WriteLine("Value1 = "+val1);       Console.WriteLine("Value2 = "+val2);       Console.WriteLine("HashCode for value1 = "+val1.GetHashCode());       Console.WriteLine("HashCode for value2 = "+val2.GetHashCode());       Console.WriteLine("Are they equal? = "+(val1.Equals(val2)));       TypeCode type1 = ... Read More

The Int64.GetTypeCode() method in C# is used to return the TypeCode for value type Int64.SyntaxFollowing is the syntax −public TypeCode GetTypeCode ();ExampleLet us now see an example to implement the Int64.GetTypeCode() method −using System; public class Demo {    public static void Main(){       long val1 = 0;       long val2 = Int64.MaxValue;       Console.WriteLine("Value1 = "+val1);       Console.WriteLine("Value2 = "+val2);       Console.WriteLine("Are they equal? = "+val1.Equals(val2));       Console.WriteLine("Value1 (HashCode) = "+val1.GetHashCode());       Console.WriteLine("Value2 (HashCode) = "+val2.GetHashCode());       TypeCode type1 = val1.GetTypeCode();     ... Read More