Question

我有一个Gs类，定义了以下内容：

private static double[] r = new double[3];

我还为此数组创建了吸气剂/设置剂：

public static double[] getR() {
    return r;
}

public static void setR(double[] r) {
    Gs.r = r;
}

在另一个类中，我想在数组中设置值，例如只是r[1]，但我不知道如何使用这些功能。

如何设置要将其值设置为的索引？

r[0], r[1], r[2]....

setter方法需要一个数组arg double[]而不是double，但是我不知道如何指定它。

Answer 1

您可以将索引作为参数传递给getter和setter：

public static double getR(int index) {
    return r[index];
}

public static void setR(int index, double r) {
    Gs.r[index] = r;
}

Answer 2

尝试

{"successStatus":0,"error":null,"response":{"items":[[0,"Value 0",0,"Value 
0"],[1,"Value 1",1,"Value 1"],[2,"Value 2",2,"Value 2"],[3,"Value 
3",3,"Value 3"],[4,"Value 4",4,"Value 4"],[5,"Value 5",5,"Value 
5"],[6,"Value 6",6,"Value 6"],[7,"Value 7",7,"Value 7"],[8,"Value 
8",8,"Value 8"],[9,"Value 9",9,"Value 
9"]],"last":false,"queryId":10,"fieldsMetadata":[{"schemaName":"mycache1","typeName":"VALUE","fieldName":"KEY","fieldTypeName":"java.lang.Integer"},{"schemaName":"mycache1","typeName":"VALUE","fieldName":"VALUE","fieldTypeName":"java.lang.String"},{"schemaName":"mycache2","typeName":"VALUE","fieldName":"KEY","fieldTypeName":"java.lang.Integer"},{"schemaName":"mycache2","typeName":"VALUE","fieldName":"VALUE","fieldTypeName":"java.lang.String"}]},"sessionToken":null}

注意：这将立即设置整个阵列

Answer 3

您只需在getter返回的数组上设置值：

Streams.zip(keyList.stream(), valueList.stream(), Maps::immutableEntry)
       .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));

在setter方法中调用Array的特定索引

3 个答案: