numberconcealchangedemo.java~1~

jbuilder2006一书的所有源代码

package conversion;

public class NumberConcealChangeDemo {
  public static void main(String[] args) {
    byte byte1 = 100;
    //byte类型自动转变为范围大的数字类型
    short short1 = byte1;
    int int1 = byte1;
    long long1 = byte1;
    float float1 = byte1;
    double double1 = byte1;
    System.out.println("byte1 = " + byte1);
    System.out.println("short1 = " + short1);
    System.out.println("int1 = " + int1);
    System.out.println("long1 = " + long1);
    System.out.println("float1 = " + float1);
    System.out.println("double1 = " + double1);
    float float2 = 1;
    //float类型自动转变为范围大的数字类型
    double double2 = float2;
    System.out.println("float2 = " + float2);
    System.out.println("double2 = " + double2);

  }
}