(java) format class / 출력 형식

import java.text.DecimalFormat;

public class FormatClass {
public static void main(String[] args) {
double num = 1234567.89;

DecimalFormat df = new DecimalFormat("0");
System.out.println(df.format(num));
//1234568
df = new DecimalFormat("0.0");
System.out.println(df.format(num));
//1234567.9

df = new DecimalFormat("000000.00000");
System.out.println(df.format(num));
//1234567.89000


// 중요 !!
df = new DecimalFormat("00000000000000.00000");
System.out.println(df.format(num));
//00000001234567.89000

df = new DecimalFormat("#");
System.out.println(df.format(num));
//1234568

df = new DecimalFormat("######.#####");
System.out.println(df.format(num));
//1234567.89

// 중요 !!
df = new DecimalFormat("################.#####");
System.out.println(df.format(num));
//1234567.89


df = new DecimalFormat("#.0");
System.out.println(df.format(num));
//1234567.9

df = new DecimalFormat("+#.0");
System.out.println(df.format(num));
//+1234567.9

df = new DecimalFormat("-#.0");
System.out.println(df.format(num));
//-1234567.9

df = new DecimalFormat("#,###.0");
System.out.println(df.format(num));
//1,234,567.9

df = new DecimalFormat("0.0E0");
System.out.println(df.format(num));
//1.2E6

df = new DecimalFormat("+#,### ; -#,###");
System.out.println(df.format(num));
//+1,234,568

df = new DecimalFormat("#.# %");
System.out.println(df.format(num));
//123456789%
        

df = new DecimalFormat("\u00A4 #.###");
System.out.println(df.format(num));
//₩1234567.89
        
    }
}