java systemoutprint_java – 为什么System.out.print()不起作用？

所以我的编码很重要,但我认为这是一个相对简单的“读取文件”程序.我收到很多编译错误,所以我开始尝试一次编译一行,看看我在哪里被软管.这是我到目前为止的地方：

import java.nio.file.*;

import java.io.*;

import java.nio.file.attribute.*;

import java.nio.channels.FileChannel;

import java.nio.ByteBuffer;

import static java.nio.file.StandardOpenOption.*;

import java.util.Scanner;

import java.text.*;

//

public class ReadStateFile

{

Scanner kb = new Scanner(System.in);

String fileName; /* everything through here compiles */

System.out.print("Enter the file to use: ");

}

注意：这是从另一个类中的方法调用的前三行构造函数.其余的构造函数继续下面……当然没有上面的第二个大括号……

fileName = kb.nextLine();

Path file = Paths.get(fileName);

//

final String ID_FORMAT = "000";

final String NAME_FORMAT = " ";

final int NAME_LENGTH = NAME_FORMAT.length();

final String HOME_STATE = "WI";

final String BALANCE_FORMAT = "0000.00";

String delimiter = ",";

String s = ID_FORMAT + delimiter + NAME_FORMAT + delimiter + HOME_STATE + delimiter + BALANCE_FORMAT + System.getProperty("line.separator");

final int RECSIZE = s.length();

//

byte data[]=s.getBytes();

final String EMPTY_ACCT = "000";

String[] array = new String[4];

double balance;

double total = 0;

}

编译后,我得到以下内容：

E:\java\bin>javac ReadStateFile.java

ReadStateFile.java:20: error: expected

System.out.print("Enter the file to use: ");

^

ReadStateFile.java:20: error: illegal start of type

System.out.print("Enter the file to use: ");

^

2 errors

E:\java\bin>

什么在HECK中我错过了？并且有人可以向我发送一段代码来产生堆栈跟踪吗？我只是迷惑自己阅读java文档,Java Tutotrials甚至没有“堆栈”作为索引关键字. Hrmph.