Which of the following data types can use for an exchange property in a content...

In SAP Cloud Integration, when configuring Exchange Properties in a Content Modifier, supported Java data types include:

java.lang.String → The most common type.

java.lang.Integer → Numeric properties can be stored.

Other options:

java.lang.string and java.lang.integer → Invalid, because Java types are case-sensitive.

Thus, correct types are java.lang.Integer and java.lang.String.