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Study/Programming

자바 형변환

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여러가지 진법변환

int to String
String str = Integer.toString(i);String str = "" + i;


String to int
int i = Integer.parseInt(str);int i = Integer.valueOf(str).intValue();


double to String
String str = Double.toString(d);


long to String
String str = Long.toString(l);


float to String
String str = Float.toString(f);


String to double
double d = Double.valueOf(str).doubleValue();


String to long
long l = Long.valueOf(str).longValue();long l = Long.parseLong(str);


String to float
float f = Float.valueOf(str).floatValue();


decimal to binary
String binstr = Integer.toBinaryString(i);


decimal to hexadecimal
String hexstr = Integer.toString(i, 16);String hexstr = Integer.toHexString(i);Integer.toHexString( 0x10000 | i).substring(1).toUpperCase());


hexadecimal(String) to int
int i = Integer.valueOf("B8DA3", 16).intValue();int i = Integer.parseInt("B8DA3", 16);


ASCII Code to String
String char = new Character((char)i).toString();


Integer to ASCII Code
int i = (int) c;


Integer to boolean
boolean b = (i != 0);


boolean to Integer
int i = (b)? 1 : 0;



 

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