package src;public class Main {	public static void main(String args[]){		String chinese = "中文 is english";		int clenth = 0;		try{			clenth = chinese.getBytes("gbk").length;		}catch(Exception e){			clenth = chinese.getBytes().length;		}		int clenth1 = chinese.length();		if(clenth==clenth1){			System.out.println("不包含中文");		}else{			System.out.println("包含中文");		}	}}

结果：包含中文

java判断一个字符串中是否含有中文