Java字符串易错方法总结

Java字符串易错方法总结

public String[] split(String regex) 和 public String[] split(String regex,int limit)

• limit为0时，数组的个人为全部分割的总个数；limit为1时，数组个数为1个；limit为2时，数组的个数为2个。
• Example

import org.junit.Test;

public class SplitExample {

	@Test

	public void test1() {

		String s1 = "welcome to split world";

		System.out.println("returning words:");

		for (String w : s1.split("\\s", 0)) {

			System.out.println(w);

		}

		System.out.println(s1.split("\\s", 0).length);

		System.out.println("returning words:");

		for (String w : s1.split("\\s", 1)) {

			System.out.println(w);

		}

		System.out.println(s1.split("\\s", 1).length);

		System.out.println("returning words:");

		for (String w : s1.split("\\s", 2)) {

			System.out.println(w);

		}

		System.out.println(s1.split("\\s", 2).length);

		System.out.println("---------------------------------");

	}

	@Test

	public void test2() {

		String str = "Javatpointtt";

		System.out.println("Returning words:");

		String[] arr = str.split("t", 0);

		for (String w : arr) {

			System.out.println(w);

		}

		System.out.println("Split array length: " + arr.length);

	}

}

• Result