如何用空格左键填充整数? [英] How to left-pad an integer with spaces?

问题描述

如何设置不带前导零的整数值?我尝试使用十进制格式，但无法获得准确的结果:

How to format an Integer value without leading zero? I tried using decimal format but I can't achieve exact result:

DecimalFormat dFormat=new DecimalFormat("000");

mTotalNoCallsLbl.setText(""+dFormat.format(mTotalNoOfCallsCount));
mTotalNoOfSmsLbl.setText(""+dFormat.format(mTotalNoOfSmsCount));
mSelectedNoOfCallsLbl.setText(""+dFormat.format(mSelectedNoOfCallLogsCount));
mSelectedNoOfSmsLbl.setText(""+dFormat.format(mSelectedNoOfSmsCount));

我得到这些输出:

500
004
011
234

但是我想要这些:

500
  4
 11
234

我的问题是如何用空格替换零?

My question is how to replace the zeroes with spaces?

推荐答案

看起来像您想用空格左键填充，所以也许您想要:

Looks like you want to left-pad with spaces, so perhaps you want:

String.format("%3d", yourInteger);

例如:

int[] values = { 500, 4, 11, 234 };

for (int v : values) {
  System.out.println(String.format("%3d", v));
}

输出:

500
  4
 11
234

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