public class A
{
     public static void main (String[] args)
     {
             //声明各种类型变量并赋初值
             byte b = 1;
             short s = 2;
             char c = 'c';
             int i = 3;
             long l = 4;
             float f = 5;
             double d = 6.0;
             System.out.println("变量b的值为："+b);
             System.out.println("变量s的值为："+s);
             System.out.println("变量c的值为："+c);
             System.out.println("变量i的值为："+i);
             System.out.println("变量l的值为："+l);
             System.out.println("变量f的值为："+f);
             System.out.println("变量d的值为："+d);
             //分别将各个类型进行转换
             s = b;  
             i = c;  
             i = s;  
             l = i;  
             f = l;  
             d = f;  
             d = b;  
             d = b+f;
             System.out.println("转换后变量b的值为："+b);
             System.out.println("转换后变量s的值为："+s);
             System.out.println("转换后变量c的值为："+c);
             System.out.println("转换后变量i的值为："+i);
             System.out.println("转换后变量l的值为："+l);
             System.out.println("转换后变量f的值为："+f);
             System.out.println("转换后变量d的值为："+d);   
     }
}

1
1
c
1
1
1.0
2.0