问题:编写Java时出现了Resource leak: 'sc' is never closed的问题,也就是对象sc下面的波浪线产生的警告,鼠标放上去之后就可以知道详情。 原因:Scanner sc = new Scanner(System.in)申明了名为s的数据输入扫描仪(Scanner),系统给它分配相应的内存空间,但是在程序结时却没有释放该内存,会造成资源浪费,因此出现
既然‘sc’没有关闭,那么我们只需要把‘sc’关闭就好了,此时需要在后面添加’sc.close();’就解决。 修改后代码如下:import java.util.*;publicclassPrint{publicstaticvoidmain(String[] args){doublenum=0;;Scanner sc=newScanner(System.in);num = sc.nextDouble();sc.close();if(num ==1){System.out....
逻辑表达式的值是一个逻辑值,即true或false。 “!=”是运算符号,它可以通过判定两个变量是否相等来返回true或者false,相等则为true,不同则为false。 "&&"逻辑操作符”与“,当两个操作数的值都为true时,采取true,只要有一个为false就都为false。多个与同时存在时,只要出现一个false,则后面的都可以不用再判断了...
import java.util.Scanner;public class Test {public static void main(String[] args) {Scanner sc = new Scanner(System.in); int x = sc.nextInt();int y =sc.nextInt(); boolean flag=x>y; if(flag){System.out.println("true"); }else{ System.out.println("flase"); }}} 骑士亚尔托莉雅...
"The configuration information describing this enterprise is not available" 2008 r2 while opening active directory domain and trusts "The home folder could not be created because the network name cannot be found" error in AD users and computers "The program cannot open the required dialog box beca...
installed and used in accordance with the instructions, may cause harmful However, there is no guarantee that interference will not occur in a interference to radio communications. particular installation. If this equipment does cause harmful interference to However, there is no guarantee that ...
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The GoTo statement performs branching and is not permitted in a debugging context.Error ID: BC30133To correct this errorDo not issue a GoTo statement in the Immediate window.See AlsoReferenceImmediate WindowEnglish (Malaysia) Your Privacy Choices Theme Manage cookies Previous Versions Blog Contribute...
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"The configuration information describing this enterprise is not available" 2008 r2 while opening active directory domain and trusts "The home folder could not be created because the network name cannot be found" error in AD users and computers "The program cannot open the required dialog box beca...