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printStackTrace

Java

Posted at 2023-01-16

throwable classのメソッドprintStackTrace

public class Outer {
    public static void main(String[] args) {
       String s = null;
       try {
            s.charAt(0);
       } catch (Exception e) {
           e.printStackTrace();
       }
    }
}

java.lang.NullPointerException
	at com.mycompany.mavenproject1.Outer.main(Outer.java:23)

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