build a java function

I want a java function, where i will provide source_json and mapping_json , and it should apply mapping json on source json and provide me output json below are the examples/cases Case 1 : source json will be { "a":"val_a", "b": { "b1":"val_b1", "b2":"val_b2" }, "c": { "c1":"val_c1", "c2": { "c21":"val_c21", "c22":"val_c22" } } } mapping json will be { "oa" :"a" , "ob" : "[login to view URL]", "oc" : "[login to view URL]", "oc1": "[login to view URL]" } output should be { "oa":"val_a", "ob":"val_b1", "oc":"val_c1", "oc1" : "val_c21" } case 2 : source json will be: [ { "a": "val_a0", "b": { "b1": "val_b01", "b2": "val_b02" }, "c": { "c1": "val_c01", "c2": { "c21": "val_c021", "c22": "val_c022" } } }, { "a": "val_a1", "b": { "b1": "val_b11", "b2": "val_b12" }, "c": { "c1": "val_c11", "c2": { "c21": "val_c121", "c22": "val_c122" } } } ] mapping json will be { "oa" : "a", "ob" : "[login to view URL]", "oc" : "[login to view URL]", "oc1 : "[login to view URL]"" } output should be [ { "oa":"val_a0", "ob":"val_b01", "oc":"val_c01", "oc1" : "val_c021" }, { "oa":"val_a1", "ob":"val_b11", "oc":"val_c11", "oc1" : "val_c121" } ] case 3 : source json will be [ { "a": "val_a0", "b": { "b1": "val_b01", "b2": "val_b02" }, "c": { "c1": "val_c01", "c2": [ { "c21": "val_c021_0", "c22": "val_c022_0" }, { "c21": "val_c021_1", "c22": "val_c022_1" } ] } }, { "a": "val_a1", "b": { "b1": "val_b11", "b2": "val_b12" }, "c": { "c1": "val_c11", "c2": [ { "c21": "val_c121_0", "c22": "val_c122_0" }, { "c21": "val_c121_1", "c22": "val_c122_1" } ] } } ] mapping json will be { "[login to view URL]" : "a", "[login to view URL]" : "[login to view URL]", "[login to view URL]" : "[login to view URL]", "[login to view URL] : "[login to view URL]"" } output should be {"o" :[ { "oa": "val_a0", "ob": "val_b01", "oc": "val_c01", "oc1": [ { "c21": "val_c021_0" }, { "c21": "val_c021_1" } ] }, { "oa": "val_a1", "ob": "val_b11", "oc": "val_c11", "oc1": [ { "c21": "val_c121_0" }, { "c21": "val_c121_1" } ] } ] } case 4 : source json will be { "Response": { "Status": { "HttpCode": 200 }, "Services": [ { "service": [ { "servername": "mycomp1", "usage": "18.5%", "process": "disk" }, { "servername": "mycomp2", "usage": "80.7%", "process": "disk" } ] } ] } } mapping json will be { "[login to view URL]" : "[login to view URL]", "[login to view URL]" : "[login to view URL]", "[login to view URL]" : "[login to view URL]" } output should be { "responseBody" : { "data" :[ { "name": "mycomp1", "used": "18.5%", "proc": "disk" }, { "name": "mycomp2", "used": "80.7%", "proc": "disk" } ] } }