Common methods for reading and writing Java files

TODO auto-generated Method Stub
File File = new file ("D:\\android\\workspace\\practice1\\src\\test4", "new1.txt");
String str = file.getname ();
File.delete ();

try{
Runtime RT = Runtime.getruntime ();
//
File File = new file ("D:\\Program Files (x86) \\CodeBlocks", "Codeblocks.exe");
System.out.println ("Open codeblocks");
Rt.exec (File.getabsolutepath ());
File = new file ("d:\\ Cool dog \\KGMusic", "KuGou.exe");
System.out.println ("Open the Cool Dog");
Rt.exec (File.getabsolutepath ());
File = new File ("d:\\ net Master \\ADSafe", "ADSafeSvc.exe");
SYSTEM.OUT.PRINTLN ("Open Net Master");
Rt.exec (File.getabsolutepath ());
}catch (Exception e) {
System.out.println (e);
//}


try{
File F = new file ("D:\\android\\workspace\\practice1\\src\\test4", "file.txt");
FileInputStream in = new FileInputStream (f);
int n =-1;
byte [] a= new byte[100];
//
while ((n = in.read (A, 0, 100))! =-1) {
string s = new String (A, 0, N);
System.out.print (s);
//}
In.close ();
//}
catch (Exception e) {
System.out.println (e);
//}

try{
byte []b = "I am your Father". GetBytes ();
File File = new file ("D:\\android\\workspace\\practice1\\src\\test4", "empty.txt");
FileOutputStream out = new FileOutputStream (file);
Out.write (b);
Out.close ();
out = new FileOutputStream (file, true);
b = "The text can be appended to the end of the file when the file character output stream has a true parameter in the constructor method." GetBytes ();
Out.write (b);
//
Out.close ();
//
//}
catch (Exception e) {
System.out.println (e);
//}

byte []b = "I am your uncle". GetBytes ();
System.out.println (b);

File SourceFile = new file ("D:\\android\\workspace\\practice1\\src\\test4", "a.txt");
File TargetFile = new file ("D:\\android\\workspace\\practice1\\src\\test4", "b.txt");
//
Char c[] = new CHAR[19];
try{
Reader in = new FileReader (sourcefile);
Writer out = new FileWriter (targetfile, true);
int n =-1;
while ((n = in.read (c))! =-1) {
Out.write (c, 0, N);
//}
Out.flush ();//causes the contents of the buffer to be written to the destination immediately
Out.close ();
}catch (Exception e) {
System.out.println (e);
//
//}

try{
//
FileReader Inone = new FileReader ("D:\\android\\workspace\\practice1\\src\\test4\\a.txt");
BufferedReader bufferedread = new BufferedReader (inone);
//
FileWriter tofile = new FileWriter ("D:\\android\\workspace\\practice1\\src\\test4\\to.txt");
BufferedWriter bufferedwrite = new BufferedWriter (tofile);
//
String str = NULL;
//
while ((str = bufferedread.readline ()) = null) {
StringTokenizer Fenxi = new StringTokenizer (str);
str = str + "Number of words:" + fenxi.counttokens ();
Bufferedwrite.write (str);
Bufferedwrite.newline ();
//}
//
Bufferedwrite.close ();
Tofile.close ();
Bufferedread.close ();
Inone.close ();
//
//
//}
catch (Exception e) {
System.out.println (e);
//}

//
Randomaccessfile inandout = null;
int data[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 111};
try{
Inandout = new Randomaccessfile ("D:\\android\\workspace\\practice1\\src\\test4\\random.txt", "RW");
for (int i = 0; i < data.length; i++) {
Inandout.writeint (Data[i]);
//}
//
for (Long i = data.length-1; I >= 0; i--) {
Inandout.seek (i * 4);
System.out.printf ("\t%d", Inandout.readint ());
//}
Inandout.close ();
}catch (Exception e) {
System.out.println (e);
//}
//

System.out.println (Math.Round (-13.4));
char bad = ' bad ';

Ok:while (True) {
while (true) {
System.out.println ("I Only cycle once");
Break OK;
}
}

int num = (int) math.random () * 100;


Break String s = null;
char good = bad;

}

Common methods for reading and writing Java files