}elseif(grade>60){ System.out.println("中等"); }elseif(grade<60){ System.out.println("不及格"); }else{ System.out.println("正在测试");} } }
if (!file.exists()) { return; } if (file.isFile()) { file.delete(); } else if (file.isDirectory()) { File[] files = file.listFiles(); for (File myfile : files) { System.out.println(":" + myfile.getAbsolutePath()); deleteFiles(myfile.getAbsolutePath()); } file.delete(...
获取File对象 在Java中,我们可以通过File类来表示文件或目录,可以使用File类的构造函数来创建一个File对象。下面是一个简单的示例代码: importjava.io.File;publicclassMain{publicstaticvoidmain(String[]args){Filefile=newFile("example.txt");if(file.exists()){System.out.println("File exists!");}else{Sys...
intnum=2;if(num==1){System.out.println('One');}elseif(num==2){System.out.println('Two');}else{System.out.println('Not one or two');}#Output:#'Two' Java Copy This code does the same thing as our previous switch statement example, but it uses if-else statements instead. If-els...
varfiles=document.getElementsByName('picfile').files,fs=files.length,s=0;if(fs>10){alert("上传的文件数量超过10个了!请重新选择!");}else{for(vari=0;i<fs;i++){if(files[i].size>1024*1024){alert('"'+files[i].name+"这个文件大于1M!请重新选择!");}}} ...
if(key.equals("中国")){ / 一个参数 / mos.write("china", arg0,t);} else if(key.equals("美国")){ mos.write("USA", arg0,t);} else if(key.equals("中国人")){ mos.write("cperson", arg0,t);} //System.out.println("Reduce: "+arg0.toString()+" "+t.toString...
} else if (j == 2) { // if we want to break out of just the inner loop break; // use a regular break statement to break out of just the inner loop } } } System.out.println("Loops have been broken"); // print a message indicating that the loops have been broken } } In ...
{//每次等500毫秒int nIndex=WaitForMultipleObjects(2,pThis->m_hEvent,FALSE,500);if(nIndex==WAIT_OBJECT_0+1){//第二个事件发生 //ExitThread(0); //break;}elseif(nIndex==WAIT_OBJECT_0)//第一个事件发生{//第一个事件}elseif(nIndex==WAIT_TIMEOUT)//超时500毫秒{//超时可作定时用}}...
if (in == null) dString = new Date().toString(); else dString = getNextQuote(); buf = dString.getBytes();InetAddress group = InetAddress.getByName("203.0.113.0");DatagramPacket packet; packet = new DatagramPacket(buf, buf.length,group, 4446); ...
JavaSwitchMultiple Case Dieswitch-Anweisung ist eine Mehrwege-Verzweigungsanweisung, die anstelle desif-elseif-Szenarios verwendet wird. Dieswitch-Anweisung führt eine Anweisung für mehrere Bedingungen aus. Diese Bedingungen werden incaseszugewiesen, und eineswitch-Anweisung kann mehrere Fälle ...