应该可以 -1是read（）方法的返回值。比如下面的代码：byte[] by=new byte[1024];FileInputStream filein=new FileInputStream("考场规则.txt");FileOutputStream fileout=new FileOutputStream("新生成.txt");while(filein.read(by)!=-1){ fileout.write(by);// fileout.write("\n");} filein.close();fileout.close();
During Java application development, we need to read the contents of a file into a string in many situations such as processing configuration files, parsing data, or handling text-based resources. In this Java tutorial, we will explore different ways toread a text file into Stringin Java from ...
System.out.println("String read from console is : \n"+inputString); } } When the program is run, the execution waits after printing the prompt string"Enter a string : ", where the user would enter a string something like"hello world"as shown in the following console window. The program...
1Function<String,String>atr=(name)->{return"@"+name;};2Function<String,Integer>leng=(name)->name.length();3Function<String,Integer>leng2=String::length; This code is perfectly valid Java 8. The first line defines a function that prepends “@” to a String. The last two lines define ...
=-1;){out.append(newString(b1,0,n));//这个可以用来读取文件内容 并且文件内容有中文读取出来也不会乱码}// 判断文件是否存在String resultHtml=out.toString();int firstIndex=resultHtml.indexOf("\n");if(firstIndex<0){logger.info("文件不存在或异常"+resultHtml);returnfalse;}// 重置游标in....
String str = null; br=new BufferedReader(new FileReader(fileName)); do{ str = buf.readLine()); }while(br.read()!=-1); 以下用法会使每行都少首字符 while(br.read() != -1){ str = br.readLine(); } 原因就在于br.read() != -1 这判断条件上。 因为在执行这个条件的时候其实它已经...
我们先从官网来个事例https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/ReentrantReadWriteLock.html,看看它是如何使用的 代码语言:javascript 代码运行次数:0 运行 AI代码解释 classRWDictionary{privatefinal Map<String,Data>m=newTreeMap<String,Data>();privatefinal ReentrantReadWriteLock...
StringmyString=IOUtils.toString(myInputStream,"UTF-8"); In Java, how do I read/convert an InputStream to a String? - Stack Overflow StringmyString=IOUtils.toString(myInputStream,"UTF-8"); In Java, how do I read/convert an InputStream to a String? - Stack Overflow ...
This method is called when the value is changed, either manually by calling StringPropertyBase.set(java.lang.String) or in case of a bound property, if the binding becomes invalid. Overrides: fireValueChangedEvent in class StringPropertyBase...
演示如何在 try-catch 语句内使用 System.in.read 来避免程序异常结束。catch 块用于捕捉异常 java.io.IOException。不过,这种情况下可以使用超类 java.lang.Exception。 // Throws2.jsl // throws example import java.io.*; class MyClass { public static void main(String[] args) ...