在Java中将整数数组转换为字符串的最佳方法 [英] Best way to convert an array of integers to a string in Java

问题描述

在Java中，我有一个整数数组.有没有一种快速的方法可以将它们转换为字符串?

In Java, I have an array of integers. Is there a quick way to convert them to a string?

I.E. int[] x = new int[] {3,4,5} x toString()应该产生"345"

I.E. int[] x = new int[] {3,4,5} x toString() should yield "345"

推荐答案

最简单的方法可能是StringBuilder:

Simplest performant approach is probably StringBuilder:

StringBuilder builder = new StringBuilder();
for (int i : array) {
  builder.append(i);
}
String text = builder.toString();

如果您发现自己在多个地方这样做，则可能需要查看

If you find yourself doing this in multiple places, you might want to look at Guava's Joiner class - although I don't believe you'll be able to use it for primitive arrays. As pointed out below, you can use Ints.join for this.

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