How Literals provide additional information to compiler in Java ?

Program to demonstrate Literal usage in Java

public class LiteralsInfo {
 
  public static void main(String[] args) {
  
     byte b1 = 127;
     byte b2 = 128; // Compilation Error
  
     short s1 = 32767;
     short s2 = 32768; // Compilation Error
  
     int i1 = 2147483647;
     int i2 = 2147483648; // Compilation Error
     int i3 = 0x1f;  // For Hexadecimal numbers
     int i4 = 0x1F;  // For Hexadecimal numbers
     int i5 = 0176;
  
     long n1 = 300L; // long suffix
     long n2 = 300l; // long suffix 
     long n3 = 300;
  
     float f1 = 3;
     float f2 = 3F; // float suffix
     float f3 = 3f; // float suffix
  
     double d1 = 1d; // double suffix
     double d2 = 1D; // double suffix
  
     char c = 'a';

 }
}