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//java.io
---------------------------------------------------------------
 
/**
* Title: ÎļþµÄ¸÷ÖÖ²Ù×÷
* Copyright: Copyright (c) 2004
* Company: ¹ã¶« ÓÐÏÞ¹«Ë¾
* @author ÍøÂçÐÅÏ¢²¿ Çì·á
* @version 1.0
*/
 
package common;
 
import java.io.*;
 
public class FileOperate {
public FileOperate() {
}
 
/**
* н¨Ä¿Â¼
* @param folderPath String Èç c:/fqf
* @return boolean
*/
public void newFolder(String folderPath) {
try {
String filePath = folderPath;
filePath = filePath.toString();
java.io.File myFilePath = new java.io.File(filePath);
if (!myFilePath.exists()) {
myFilePath.mkdir();
}
}
catch (Exception e) {
System.out.println("н¨Ä¿Â¼²Ù×÷³ö´í");
e.printStackTrace();
}
}
 
/**
* н¨Îļþ
* @param filePathAndName String Îļþ·¾¶¼°Ãû³Æ Èçc:/fqf.txt
* @param fileContent String ÎļþÄÚÈÝ
* @return boolean
*/
public void newFile(String filePathAndName, String fileContent) {
 
try {
String filePath = filePathAndName;
filePath = filePath.toString();
File myFilePath = new File(filePath);
if (!myFilePath.exists()) {
myFilePath.createNewFile();
}
FileWriter resultFile = new FileWriter(myFilePath);
PrintWriter myFile = new PrintWriter(resultFile);
String strContent = fileContent;


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float ff= 1.3f;(4B)
int 4B;
long 8B;
double 8B;
byte Ò»×Ö½ÚÕûÐÍ
char 2B
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int num[] = new int[3];
int[] num;
num = new int[3];
int [] num = new int[]{1,2,3};
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class Fish extends Aniaml{}
 super.(¸¸ÀàÖÐÓë×ÓÀàÏàͬµÄ·½·¨£©();//super-ÌØÊâµÄ±äÁ¿£¬ÓÃÓÚ·ÃÎʸ¸ÀàÖÐÓë×ÓÀàÏàͬµÄ·½·¨£¬ÈçÏÂ
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class Fish extends animal
{
 void output()
 {
  System.out.println("Fish");
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