Java Basics (i)---data types &math methods & casts

Data types and various math class methods

1  Public classHelloWorld {2      Public Static voidMain (String args[]) {3         //familiar with various data types, forcing type conversions to look at levels4         Final intvar = 100;5         intVarr = 200;6         floatm = -21.5f;7         Doublep = 21.234;8         BooleanJudge =true;9         Charch = ' A ';Ten         Longnum = 625; One          ShortNUM1 = 12; A         byteA = 1; -String str = "I am a great boy!"; -          the         //arithmetic operations depend on various static methods of the math class -System.out.println (Math.Abs (m));//Absolute Value -System.out.println (Math.sin (a));//Trigonometric Functions -SYSTEM.OUT.PRINTLN (Math.asin (0.5));//Inverse trigonometric Function +System.out.println (Math.sqrt (Var));//Open Square Heel -SYSTEM.OUT.PRINTLN (MATH.CBRT (num));//Open Cube Root +System.out.println (Math.Round (m));//Rounding ASystem.out.println (Math.ceil (1.5));//Rounding up atSystem.out.println (Math.floor (1.9));//Rounding down -System.out.println (Math.max (100, 50));//take a large value -System.out.println (Math.min (12.3, 13.3));//take a small value -System.out.println (Math.random () +1);//Generate random numbers -System.out.println (Math.pow (2, 10));//exponential arithmetic: calculating - B (latter) power of a (former) inSystem.out.println (MATH.LOG10 (100));//Logarithmic operations -     } to}
The above code eclipse is compiled by

Forcing type conversions

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Java Basics (i)---data types &math methods & casts