String str = "n1e你v00a?Az$Z000?#99?9900眯2_悄s3你y4@好?!6求救你d75a8t"; Pattern p= Pattern.compile("[\u4e00-\u9fa5]");//把汉字截取出来。 Matcher m= p.matcher(str); while(m.find()){ System.out.print(m.group()); } String str = "n1e你v00a?Az$Z000?#99?9900眯2_悄s3你y4@好?!6求救你d75a8t"; String a = ""; String b = ""; String d = ""; String s = ""; for(int i = 0;i<str.length();i++){ char c = str.charAt(i); if(48<=c && c<=58){ a+=c; } else if(64<=c && c<=91){ b+=c; }else if(96<=c && c<=123){ b+=c; }else{ if(((String.valueOf(c)).getBytes().length)>1){ d+=c; }else{ s+=c; } } } System.out.println(a); System.out.println(b); System.out.println(d); System.out.println(s);