JavaSE 第三讲 Pitfall of Primitiva Date 9.22

public class Variable2
{
public static void main(String[] args)
{
//double a = 1.2;
//System.out.println(a);

          //float a = 1.2;编译出错
          //System.out.println(a);

          //char a = '李';
          //System.out.println(a);

          //boolean a = false;
          //System.out.println(a);

          //boolean a = true;
          //System.out.println(a);

          //float a = (float)1.2;
          //System.out.println(a);

          //float a = 1.5f;
          //System.out.println(a);

          int a;
          System.out.println(a);

         }
}