java截取字符串中的数字，并且分组？ java如何从任意字符串中截取数字
\u7528java \u622a\u53d6\u5b57\u7b26\u4e32\uff0c\u6bcf\u4e09\u4e2a\u4e00\u7ec4\u4ee5\u4e0b\u662f\u5c06\u4e00\u957f\u4e32\u6570\u5b57\u5206\u7ec4\u7528\u9017\u53f7\u9694\u5f00,\u6bcf\u4e09\u4e2a\u4e00\u7ec4,\u8f6c\u5316\u4e3a\u5b57\u7b26\u4e32.
\u4f8b\u5982:
2345678--->2,345,678
23--->23
private static String convert(long space) { String str = String.valueOf(space); StringBuilder builder = new StringBuilder(str); str = builder.reverse().toString(); StringBuilder stringBuilder = new StringBuilder(); for (int i = 0; i str.length()){ stringBuilder.append(str.substring(i)); break; } stringBuilder.append(str.substring(i, i + 3) + ","); } } str = stringBuilder.reverse().toString(); //\u6d88\u9664\u5b57\u7b26\u4e32\u957f\u5ea6\u4e3a3\u7684\u500d\u6570\u65f6\u591a\u51fa\u7684',' if (str.charAt(0)==','){ str = str.substring(1); } return str;}\u8fd8\u53ef\u4ee5\u518d\u7ee7\u7eed\u4f18\u5316,\u95f4\u9694,\u5206\u9694\u7b26.....\u54ce\u5440,\u809a\u5b50\u597d\u75bc,\u518d\u89c1!
\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u4ece\u6587\u672c\u4e2d\u622a\u53d6\u6570\u5b57\uff0c\u4e0b\u9762\u662f\u8be6\u7ec6\u4ee3\u7801\uff1a
class Ideone
{
public static void main (String[] args) throws java.lang.Exception
{
String phoneString = "\u54c8\u54c8,13888889999";
// \u63d0\u53d6\u6570\u5b57
// 1
Pattern pattern = Pattern.compile("[^0-9]");
Matcher matcher = pattern.matcher(phoneString);
String all = matcher.replaceAll("");
System.out.println("phone:" + all);
// 2
Pattern.compile("[^0-9]").matcher(phoneString).replaceAll("");
}
}
用正则表达式按数字和中文的交界处切分字符串,就可以实现你的要求,完整的Java程序如下
public class F{
public static void main(String[] args){
String str="鱼豆腐20海带3掌中宝8鸡翅2可乐2";
String[] s=str.split("(?<=[0-9])(?=[\u4e00-\u9fa5])");
for(int i=0;i<s.length;i++){
System.out.println(s[i]);
}
}
}
substring
public class Test {
public static void main(String[] args) {
String a="123fggs2fg6";
for(int i=0;i<a.length();i++)
{
String one=a.substring(i, i+1);
char ar=one.charAt(0);
if(ar>='0' && ar<='9' )
{
//是数字
System.out.println(ar);
}
}
}
}
substring
public class Test {
public static void main(String[] args) {
String a="123fggs2fg6";
for(int i=0;i<a.length();i++)
{
String one=a.substring(i, i+1);
char ar=one.charAt(0);
if(ar>='0' && ar<='9' )
{
//是数字
System.out.println(ar);
}
}
}
}
substring
public class Test {
public static void main(String[] args) {
String a="123fggs2fg6";
for(int i=0;i<a.length();i++)
{
String one=a.substring(i, i+1);
char ar=one.charAt(0);
if(ar>='0' && ar<='9' )
{
//是数字
System.out.println(ar);
}
}
}
}
substring
public class Test {
public static void main(String[] args) {
String a="123fggs2fg6";
for(int i=0;i<a.length();i++)
{
String one=a.substring(i, i+1);
char ar=one.charAt(0);
if(ar>='0' && ar<='9' )
{
//是数字
System.out.println(ar);
}
}
}
}
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