Preconditions.checkNotNull(object, "发生了空指针异常,啦啦啦啦啦~~~啦完以后打印一下对象信息+"JSON.toJSONString(object)); 看源码 package com.google.common.base; public final class Preconditions { private Preconditions() { } if (reference == null) { throw new NullPointerException(String.valueOf(...
}if(StringUtils.checkValNotNull(this.getIdType())) { globalConfiguration.setIdType(this.getIdType()); }if(StringUtils.checkValNotNull(this.getDbColumnUnderline())) { globalConfiguration.setDbColumnUnderline(this.getDbColumnUnderline()); }if(StringUtils.checkValNotNull(this.getFieldStrategy())) ...
String nullString =null; String emptyString =""; String blankString =" "; In this tutorial, we'll look athow to check if a String is Null, Empty or Blank in Java. Using the Length of the String As mentioned before, a string is empty if its length is equal to zero. We will be...
使用Preconditions.checkNotNull(...) 来处理, 相当于省掉自己再手写 throw new NullPointerException(String.valueOf(errorMessage)); 节省时间,复杂逻辑,可能需要写十几处判空的逻辑,还要处理异常,适用于空指针异常处理
Assertion.checkNotNull(command);//---//System.out.println("$sendCommand : " + command);//On envoit la request et on attend la response.//TODO Envoyer les mappush(socketChannel,"$"+ command.getName());finalString response = pull(socketChannel);if(response ==null) {returnVResponse.create...
String str = null; if (str == null) { System.out.println("The string is null."); } else { System.out.println("The string is not null."); } Employing the Objects.isNull() method: In Java 8 and later versions, you can use the Objects.isNull() method from the java.util.Object...
checkNotNull 函数 : 参数为 null , 抛出 IllegalStateException 异常 , 参数为非空 , 返回非空值 ; /** * 如果[value]为空,则抛出[IllegalStateException]。否则 * 返回非空值。 * * @sample samples.misc.Preconditions.failCheckWithLazyMessage ...
check if email is sent check if input is integer or string Check if linq result is null. check if the data column and the data row have the same value in a datatable check if the datarow has values in datatable check if the result is integer or not check if variable is number in...
publicclassCheckIfIntIsNullExample{publicstaticvoidmain(String[]args){// Part 1: Primitive intintprimitiveInt=0;System.out.println("Primitive int value: "+primitiveInt);// Part 2: Nullable IntegerInteger nullableInt=null;System.out.println("Nullable Integer value: "+nullableInt);// Part 3: ...
您的堆栈跟踪表示，您正在为UpdateTaskA构造函数中的UpdateTaskA参数传递null，该参数是从UpdateAvaterp中...