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