topics: Java file getPath getAbsolutePath getCanonicalPath

public static void testFileIO(){
 

/*  output:

-----case 1------

getPath()=.\test1.txt

getAbsolutePath()=C:\Users\hongbin\workspace\IOtrial\.\test1.txt

getCanonicalPath()=C:\Users\hongbin\workspace\IOtrial\test1.txt

*/
 File file1 = new File(".\\test1.txt"); 
 out.println("-----case 1------");
 out.println("getPath()="+file1.getPath());
 out.println("getAbsolutePath()="+file1.getAbsolutePath());
 try{
 out.println("getCanonicalPath()="+file1.getCanonicalPath());  
 } catch(IOException e) {
 e.printStackTrace();  
 }

/*output

----case 2------

getPath()=\workspace\test\test1.txt

getAbsolutePath()=C:\workspace\test\test1.txt

getCanonicalPath()=C:\workspace\test\test1.txt

*/
 File file2 = new File("\\workspace\\test\\test1.txt");
 out.println("----case 2------");
 out.println("getPath()="+file2.getPath());
 out.println("getAbsolutePath()="+file2.getAbsolutePath());
 try{
 out.println("getCanonicalPath()="+file2.getCanonicalPath());  
 } catch(IOException e) {
 e.printStackTrace();  
 }

/* output

----case 3------

getPath()=D:\workspace\test\test1.txt

getAbsolutePath()=D:\workspace\test\test1.txt

getCanonicalPath()=D:\workspace\test\test1.txt 

*/
 File file3 = new File("D:\\workspace\\test\\test1.txt");
 out.println("----case 3------");
 out.println("getPath()="+file3.getPath());
 out.println("getAbsolutePath()="+file3.getAbsolutePath());
 try{
 out.println("getCanonicalPath()="+file3.getCanonicalPath());  
 } catch(IOException e) {
 e.printStackTrace();  
 }
 
return;
 
}