什么意思?是要
// ReadByLine.java
import java.io.*;public class ReadByLine
{
public static void main(String[] args)
throws IOException
{
LineNumberReader reader = new LineNumberReader(new FileReader("ReadByLine.java"));
String line;
while ((line = reader.readLine()) != null)
{
System.out.print(reader.getLineNumber() + ": ");
System.out.println(line);
}
reader.close();
}
}还是要
e.printStackTrace();???
// ReadByLine.java
import java.io.*;public class ReadByLine
{
public static void main(String[] args)
throws IOException
{
LineNumberReader reader = new LineNumberReader(new FileReader("ReadByLine.java"));
String line;
while ((line = reader.readLine()) != null)
{
System.out.print(reader.getLineNumber() + ": ");
System.out.println(line);
}
reader.close();
}
}还是要
e.printStackTrace();???
// ReadByLine.java
import java.io.*;public class ReadByLine
{
public static void main(String[] args)
throws IOException
{
LineNumberReader reader = new LineNumberReader(new FileReader("ReadByLine.java"));
String line;
while ((line = reader.readLine()) != null)
{
System.out.print(reader.getLineNumber() + ": ");
System.out.println(line);
}
reader.close();
}
}
import java.io.*;public class ReadByLine
{
public static void main(String[] args)
throws IOException
{ String savetheString = args[0];//input the line
LineNumberReader reader = new LineNumberReader(new FileReader("ReadByLine.java"));
String line;
while ((line = reader.readLine()) != null)
{ if(line.equals(savetheString)){
System.out.print(reader.getLineNumber() + ": ");
System.out.println(line);
break;
}
}
reader.close();
}
}
搂主是要分析源代码"语句所在的当前行号"吧