ADDITIONAL JAVA TOPICS - Java Programming: From Problem Analysis to Program Design - page 977

Class: CharClass
public class CharClass
{

private char ch;

public CharClass()
{

ch = ' ';

}

public CharClass( char c)
{

ch = c;

}

public void setChar( char c)
{

ch = c;

}

public int getChar()
{

return ch;

}

public char nextChar()
{

return ( char )(( int )ch + 1);

}

public char prevChar()
{

return ( char )(( int )ch - 1);

}

public String toString()
{

return (String.valueOf(ch));

}

}

Class: FloatClass
public class FloatClass
{

private float x;

public FloatClass()
{

x = 0;

}

public FloatClass( float num)
{

x = num;

}