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org.springframework.util.Assert

时间:2022-12-20 23:05:12浏览次数:40  
标签:Assert null java util reflect location org main

使用assert的好处就是比较简介,不用加try catch就可以附加一些预期的提示信息,方便定位问题

import org.springframework.util.Assert;

public class Demo {
public static void main(String[] args) {
String location = null;
Assert.notNull(location, "Location must not be null");
System.out.println("location = [" + location + "]");
}
}

Output:

Exception in thread "main" java.lang.IllegalArgumentException: Location must not be null
at org.springframework.util.Assert.notNull(Assert.java:115)
at Demo.main(Demo.java:9)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)

 



标签:Assert,null,java,util,reflect,location,org,main
From: https://blog.51cto.com/u_15147537/5956960

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