作者在 2011-09-07 15:29:43 发布以下内容
class kingDemo{
public static void main(String args[]){
System.out.println("Input one Character\n");
String s ="jfei";
System.out.println(s.length());
System.out.println(s.charAt(23));
System.out.println();
System.out.println(s.substring(1,s.length()/2));
System.out.println(s.indexOf(3));
File f = new File(".");
System.out.println(f.getName());
System.out.println(f.getFileName());
System.out.println(f.getPath());
System.out.println(f.getAbsolutePath());
System.out.println();
System.out.println(f.isFile());
System.out.println(f.canRead());
System.out.println(f.canWrite());
System.out.println();
}
public void print(){
System.out.println();
System.out.print();
FileReader fr = new FileReader();
FileWriter fw = new FileWriter();
System.out.println(fr.readInt();
fw.write(3);
fw.close();
fr.close();
fw.flush();
}
}