java - Pass Integer.class as parameter -

i have following class:

package query;  public class predicate<t> {      private string operand1;      private string operator;      private t operand2;      private class<t> classtype;       public predicate(string operand1, t operand2, class<t> classtype){         this(operand1, "=", operand2, classtype);      }      public predicate(string operand1, string operator, t operand2, class<t> classtype){         this.operand1 = operand1;          this.operator = operator;          this.operand2 = operand2;          this.classtype = classtype;      }      public string getoperand1() {         return operand1;     }      public string getoperator() {         return operator;     }      public t getoperand2() {         return operand2;     }      public class<t> getclasstype() {         return classtype;     }      @override     public string tostring() {         return operand1 + " " + operator + " ?";      } } 

the following line compiles fine:

predicate<string> p1 = new predicate<>("given_name", "=", "kim", string.class);  

however, following not:

predicate<integer> p1 = new predicate<>("id", "=", "1", integer.class);  

the compiler mentions: cannot infer type arguments predicate<>

what wrong / how can solve this?

"1" string , incompatible integer.class

new predicate<>("id", "=", 1, integer.class) 

should ok

or

new predicate<>("id", "=", "1", string.class)