main方法中编写匿名内部类实现空字符串的去除

//定义接口和对应的字符串处理方法
public interface StringDeal {
public String filterString();

}

//在main方法中定义匿名内部类，并添加处理方法

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("源字符串为："+strSource);
System.out.println("处理后字符串为："+sd.filterString());
}
}

打印结果：

源字符串为：I am a Chinese!
处理后字符串为：IamaChinese!