TestingPoints.java

02. Java Datatypes.
//TestingPoints.java

class TestingPoints
{
public static void main(String[] args)
{
byte b1 = 10;
byte b2 = 100;
//byte b3 = 254;
byte b3 = (byte)254;
System.out.println(b1);
System.out.println(b2);
System.out.println(b3);

char ch1  = 'a';
char ch2  = 98;
System.out.println(ch1);
System.out.println(ch2);

int i1  = 97;
int i2  = 'b';
System.out.println(i1);
System.out.println(i2);

int a = 10;
//byte b = a;
byte b = (byte)a;
System.out.println(a);
System.out.println(b);

long l = 10;
float f = l;
System.out.println(l);
System.out.println(f);

//long l2= f;
float f2 = 24.97f;
long l2= (long)f2;
System.out.println(f2);
System.out.println(l2);

float f3 = 254.97f;
byte b4= (byte)f3;
System.out.println(f3);
System.out.println(b4);

System.out.println(22/7 * 10 * 10);     //300
System.out.println(22.0/7 * 10 * 10);                                   //314.285.....

int i10 = 22/7 * 10 * 10;
//float f10 = 22.0/7 * 10 * 10;
/*
TestingPoints.java:49: possible loss of precision
found   : double
required: float
                float f10 = 22.0/7 * 10 * 10;
*/
float f10 = 22.0f/7 * 10 * 10;
float f11 = (float)(22.0/7 * 10 * 10);
double d = 22.0/7 * 10 * 10;

byte b12 = 10;
byte b13 = 20;
//byte b14 = b12 + b13;
//byte b14 = (byte)b12 + b13;
//byte b14 = (byte)b12 + (byte)b13;
byte b14 = (byte)(b12 + b13);
int a14 = b12 + b13;
System.out.println(b14);  //10
System.out.println(a14);  //10

char ch12 = 'a';
char ch13 = 'b';
//char ch14 = ch12 + ch13;
char ch14 = (char)(ch12 + ch13);
int i14 = ch12 + ch13;
System.out.println(ch14);  //|-
System.out.println(i14);  //195

}
} 

    Out Put:
10
100
-2
a
b
97
98
10
10
10
10.0
24.97
24
254.97
-2
300
314.2857142857143
30
30

195

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