java 补空格_java里面使用string.format如何实现空格右填充？

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java里面使用string.format实现空格右填充62616964757a686964616fe59b9ee7ad9431333365646239代码如下：

package cn.com.songjy;

import java.text.NumberFormat;

public class NumberFormatTest {

public static void main(String[] args) {

int i = 1;

NumberFormat nf = NumberFormat.getInstance();

nf.setGroupingUsed(false);

nf.setMaximumIntegerDigits(4);

nf.setMinimumIntegerDigits(4);

System.out.println(nf.format(i));

}

}

public class TestStringFormat {

public static void main(String[] args) {

int youNumber = 1;

String str = String.format("%04d", youNumber);

System.out.println(str); // 0001

}

}

private static final String STR_FORMAT = “0000”;

public static String haoAddOne_2(String liuShuiHao){

Integer intHao = Integer.parseInt(liuShuiHao);

intHao++;

DecimalFormat df = new DecimalFormat(STR_FORMAT);

return df.format(intHao);

}