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Java String valueOf Example
Submitted by Andr on Tue, 10/26/2010 - 20:59
  1. /*
  2. Java String valueOf example.
  3. This Java String valueOf example describes how various Java primitives
  4. and Objects are converted to Java String object using String valueOf method.
  5.  
  6. */
  7.  
  8. public class JavaStringValueOfExample{
  9.    
  10.     public static void main(String args[]){
  11.        
  12.         /*
  13.         Java String class defines following methods to convert various
  14.         Java primitives to Java String object.
  15.        
  16.         1) static String valueOf(int i)        
  17.         Converts argument int to String and returns new String object
  18.         representing argument int.
  19.        
  20.         2) static String valueOf(float f)        
  21.         Converts argument float to String and returns new
  22.         String object representing argument float.
  23.        
  24.         3) static String valueOf(long l)        
  25.         Converts argument long to String and returns new
  26.         String object representing argument long.
  27.        
  28.         4) static String valueOf(double i)        
  29.         Converts argument double to String and returns
  30.         new String object representing argument double.
  31.        
  32.         5) static String valueOf(char c)        
  33.         Converts argument char to String and returns
  34.         new String object representing argument char.
  35.        
  36.         6) static String valueOf(boolean b)        
  37.         Converts argument boolean to String and returns
  38.         new String object representing argument boolean.
  39.        
  40.         7) static String valueOf(Object o)        
  41.         Converts argument Object to String and returns
  42.         new String object representing argument Object.
  43.        
  44.         */
  45.        
  46.         int i=10;        
  47.         float f = 10.0f;        
  48.         long l = 10;        
  49.         double d = 10.0d;        
  50.         char c='a';        
  51.         boolean b = true;        
  52.         Object o = new String("Hello World");
  53.        
  54.         /* convert int to String */        
  55.         System.out.println(String.valueOf(i));
  56.        
  57.         /* convert float to String */        
  58.         System.out.println(String.valueOf(f));
  59.        
  60.         /* convert long to String */        
  61.         System.out.println(String.valueOf(l));
  62.        
  63.         /* convert double to String */        
  64.         System.out.println(String.valueOf(d));
  65.        
  66.         /* convert char to String */        
  67.         System.out.println(String.valueOf(c));
  68.        
  69.         /* convert boolean to String */        
  70.         System.out.println(String.valueOf(b));
  71.        
  72.         /* convert Object to String */        
  73.         System.out.println(String.valueOf(o));
  74.        
  75.     }
  76.  
  77. }
  78.  
  79. /*
  80. OUTPUT of the above given Java String valueOf Example would be:
  81. 10
  82. 10.0
  83. 10
  84. 10.0
  85. a
  86. true
  87. true
  88. Hello World
  89. */
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