Type Casting in Java

title: Type Casting in Java description: Java mein ek data type ko doosre mein convert karna

2 Types of Casting

Chhota type → Bada type. Automatic hota hai, data loss nahi.

byte → short → int → long → float → double

java exampleWoHoTech

int i = 100;
long l = i;      // automatic
double d = i;    // automatic
System.out.println(d); // 100.0

Bada type → Chhota type. Manual karna padta hai, data loss possible.

java exampleWoHoTech

double d = 9.78;
int i = (int) d;  // explicit cast
System.out.println(i); // 9 (decimal part lost)

java exampleWoHoTech

String s = "123";
int i = Integer.parseInt(s);
double d = Double.parseDouble("3.14");

java exampleWoHoTech

int i = 100;
String s1 = String.valueOf(i);   // "100"
String s2 = Integer.toString(i); // "100"
String s3 = "" + i;              // "100"

java exampleWoHoTech

char c = 'A';
int ascii = c;           // 65
char back = (char) 65;   // 'A'

title: Type Casting in Java description: Java mein ek data type ko doosre mein convert karna

Chhota type → Bada type. Automatic hota hai, data loss nahi.

byte → short → int → long → float → double

java exampleWoHoTech

int i = 100;
long l = i;      // automatic
double d = i;    // automatic
System.out.println(d); // 100.0

Bada type → Chhota type. Manual karna padta hai, data loss possible.

java exampleWoHoTech

double d = 9.78;
int i = (int) d;  // explicit cast
System.out.println(i); // 9 (decimal part lost)

java exampleWoHoTech

String s = "123";
int i = Integer.parseInt(s);
double d = Double.parseDouble("3.14");

java exampleWoHoTech

int i = 100;
String s1 = String.valueOf(i);   // "100"
String s2 = Integer.toString(i); // "100"
String s3 = "" + i;              // "100"

java exampleWoHoTech

char c = 'A';
int ascii = c;           // 65
char back = (char) 65;   // 'A'