Warning: file_get_contents(/data/phpspider/zhask/data//catemap/9/java/397.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
Java在console.printf上出错_Java_Netbeans - Fatal编程技术网

Java在console.printf上出错

Java在console.printf上出错,java,netbeans,Java,Netbeans,我在Netbeans中输入了以下代码,但出现了错误 package learn.java; import java.io.Console; public class LearnJava { public static void main(String[] args) { Console console = System.console(); console.printf("Hello My Name Is , Nitesh"); } } 错误:

我在Netbeans中输入了以下代码,但出现了错误

package learn.java;

import java.io.Console;

public class LearnJava {
    public static void main(String[] args) {
       Console console = System.console();
       console.printf("Hello My Name Is , Nitesh");
    }
}
错误:

Exception in thread "main" java.lang.NullPointerException
    at learn.java.LearnJava.main(LearnJava.java:8) C:\Users\The Alian\AppData\Local\NetBeans\Cache\8.1\executor-snippets\run.xml:53: Java returned: 1
BUILD FAILED (total time: 0 seconds)

您启用控制台了吗?查看此处以了解说明:

如果做不到这一点,您可以用简单的

System.out.println("Hello My Name Is , Nitesh");
或对于格式化字符串:

String name = "Nitesh";
System.out.format("Hello My Name Is , %s", name);

您启用控制台了吗?查看此处以了解说明:

如果做不到这一点,您可以用简单的

System.out.println("Hello My Name Is , Nitesh");
或对于格式化字符串:

String name = "Nitesh";
System.out.format("Hello My Name Is , %s", name);

您可以通过调用在std out处写入格式化字符串:

System.out.printf("Hello My Name Is %s", "Nitesh");
此外,您还可以将错误消息写入err out:

System.err.printf("Some problem %s", "error message");

您可以通过调用在std out处写入格式化字符串:

System.out.printf("Hello My Name Is %s", "Nitesh");
此外,您还可以将错误消息写入err out:

System.err.printf("Some problem %s", "error message");
System.err.printf不是System.out.printf。请更新syntax.System.err.printf而不是System.out.printf。请更新您的语法。