import java.io.*;
import java.util.*;
public class TestString { /**
* @param args
*/
static public int i=10;
static public long l=10L;
static public float f=10f;
static public double d=10d;
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println(String.format("%-10d%x \n%f %f", i,l,f,f));
try{
Formatter ff= new Formatter("1.txt");
ff.format("%-10d%x \n%f %f", i,l,f,f);
}catch(Exception file){
file.printStackTrace();
}finally{
System.out.println(new File("1.txt").isFile());
}
}}输出:
10 a
10.000000 10.000000
true
import java.util.*;
public class TestString { /**
* @param args
*/
static public int i=10;
static public long l=10L;
static public float f=10f;
static public double d=10d;
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println(String.format("%-10d%x \n%f %f", i,l,f,f));
try{
Formatter ff= new Formatter("1.txt");
ff.format("%-10d%x \n%f %f", i,l,f,f);
}catch(Exception file){
file.printStackTrace();
}finally{
System.out.println(new File("1.txt").isFile());
}
}}输出:
10 a
10.000000 10.000000
true
import java.io.*;
import java.util.*;
public class TestString { /**
* @param args
*/
static public int i=10;
static public long l=10L;
static public float f=10f;
static public double d=10d;
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println(String.format("%-10d%x \n%f %f", i,l,f,f));
try{
Formatter ff= new Formatter("1.txt");
ff.format("%-10d%x \n%f %f", i,l,f,f);
ff.flush() ;//这里
ff.close(); //用完关了 }catch(Exception file){
file.printStackTrace();
}finally{
System.out.println(new File("1.txt").isFile());
} }}