자바 자주쓰는 형변환

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;