main方法中編寫匿名內部類實現空字符串的去除

//定義接口和對應的字符串處理方法
public interface StringDeal {
public String filterString();

}

//在main方法中定義匿名內部類，並添加處理方法

public class OutString {
public static void main(String[] args) {
final String strSource = "I am a Chinese!"; 
StringDeal sd = new StringDeal(){
public String filterString() {
String convertStr = strSource;
convertStr = convertStr.replaceAll(" ", "");
return convertStr;
}
};
System.out.println("源字符串爲："+strSource);
System.out.println("處理後字符串爲："+sd.filterString());
}
}

打印結果：

源字符串爲：I am a Chinese!
處理後字符串爲：IamaChinese!