[1].[代码] RightFormat.java
import java.util.*;
import java.text.*;
public class RightFormat extends java.text.Format
{
private int size;
private char pad;
public RightFormat(int fieldsize, char padchar) {
if (fieldsize <= 1)
throw new IllegalArgumentException("fieldsize must be > 1");
size = fieldsize;
pad = padchar;
}
public RightFormat(int fieldsize) {
this(fieldsize, ' ');
}
public StringBuffer format(Object obj,
StringBuffer toAppendTo,
FieldPosition pos)
{
String val;
int ix;
val = obj.toString();
for(ix = size; ix > val.length(); ix--)
toAppendTo.append(pad);
toAppendTo.append(val);
return toAppendTo;
}
public Object parseObject(String source, ParsePosition status)
{
int start, end, ix;
String ret = "";
end = status.getIndex() + size;
start = status.getIndex();
for(ix = start; ix < end; ix++) {
if (source.charAt(ix) != pad) break;
}
if (ix < end) {
ret = source.substring(ix, end);
}
status.setIndex(end);
return ret;
}
}