l841017122的博客

import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.FileReader; import java.io.FileWriter; public class FileIO { /** * @param args

public class LearnString { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub String s1 = new String("hello"); String s2 = new String("李"); St