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我创建了一个程序来匹配两个txt文件。我得到的编译错误,标志从未初始化,但我不知道为什么。 for循环应该运行,if if应该初始化标志。任何帮助,将不胜感激。谢谢!国旗从未初始化
public static void main(String[] args) throws IOException
{
boolean flag;
File f = new File(args[0]);
Scanner sc = new Scanner(f);
File f2 = new File(args[1]);
Scanner sc2 = new Scanner(f2);
int line = 1;
String t1 = "";
String t2 = "";
while(sc.hasNextLine() && sc2.hasNextLine())
{
String line1 = sc.nextLine().toUpperCase();
String line2 = sc2.nextLine().toUpperCase();
for(int i = 0; i < line; i++)
{
if(line1.substring(0,i).equals(line2.substring(0,i)))
{
flag = false;
t1 = line1.substring(0,i);
t2 = line2.substring(0,i);
System.out.print("");
}
else
{
flag = true;
t1 = line1.substring(0,i);
t2 = line2.substring(0,i);
System.out.print("");
}
}
if(flag == true)
{
System.out.println("Line # " + line + ": Matching " + line + "character/s true" + "**" + t1 + "**" + t1 + "**");
}
else
{
System.out.println("Line # " + line + ": Matching " + line + "character/s false" + "**" + t1 + "**" + t2 + "**");
}
line += 1;
}
}
}
如果您的'for'循环从未运行会怎么样?那么'flag'的价值是什么? –