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JAVA 强制数据类型转换

class Change{

   public static void main(String[] args){

  

   short shortvar=0;

   int intvar=0;

   String stringvar;

   float floatvar=9.99f;

   double doublevar=99999999.99;

   char charvar='9';

   String intstring="10";

   String floatstring="10.1f";

   String longstring="99999999";

   String doubleString="99999999.9";

   String s1="0";

   String s2="abc";

   String s3="true";

  

   //1.short-->int

   intvar=shortvar;

   System.out.println(intvar);

//2.int-->short

shortvar= (short) intvar ;

   System.out.println(shortvar);

  

//3.int->String

   intvar=1;

   stringvar=String.valueOf (intvar);

   System.out.println(stringvar);

  

   //4.float->String

   stringvar=String.valueOf (floatvar);

   System.out.println(stringvar);

  

   //5. double->String

   stringvar=String.valueOf (doublevar);

   System.out.println(stringvar);

  

   //6. char->String

   stringvar=String.valueOf (charvar);

   System.out.println(stringvar);

  

   //7 String->int、float、long、double

   int i=Integer.parseInt (intstring);

   float f= Float.parseFloat (floatstring);

   long lo=Long. parseLong (longstring);

   double d=Double. parseDouble(doubleString);

   System.out.println(i+"/n"+f+"/n"+lo+"/n"+d);

  

   //8 String->byte、short

   byte b=Byte.parseByte(s1);

   short sh=Short.parseShort(s1);

   System.out.println(b+"/n"+sh) ;

  

   //9 String->char

   char a=s2.charAt(0);

   System.out.println(a);

  

   //10 String-->boolean

   boolean flag=Boolean.getBoolean(s3);

   System.out.println(s3);

  

  

   }

  }