myFirstJava repository to train java skill Calendar, to train debugger tool Worldcup, to train UML design https://mermaid.live/edit#pako:eNp9VE1P4zAQ_SuWT6BSpN1jhJB2QewFJLTsMZdpMk2sOHZkO4XC9r-vv-J1Qmh7qDN98-bNzIs_aCVrpAWtOGh9z6BR0JfCfQkhPkiewFQt-fARst0z5HVBHtxPDGn2jgVhwsRng9DrgvxQCo6PTJubPzZwG_7caAPKXFy6p1MoE6p4wlRlQbnhrGnXshxzShLQ26QXo5hoYmjgcEQ1E_PsQ5McB0i8JOv62aZJkbihmelRo1hRE6hTziA1M0yKuabNYKE_gfMZwUTxG_eoEBPHa8v0gGpBoUaO8_SQfSchWxVUhh2s7J2UHCGW2RgFbBJP_CdvwQlLBD0YVAz4onovD7jS_S8JvEMcsgk0XO5QLxVUzlAXO1up8PUmLTnZvZ2DqDOqHlS3JNLWafwTUU7zxGpv2IzowLTfyZxKqgaENd2aM6V6BfXfmx3j3G1kTlArtpuWYh87VnWrLYY2Ayp67Obv9TWZzFMQfDO2db0CmcxxDhMssEQEbo_I1nQGleZ_BpMN9wxqGl-ChCmQeK-U9FtJyXZ7G08P4X5pQW_hK9x3e_Jv_gznIzM6d0xjzZAx5lDe7wUZNYa10Cvao-qB1fZS9BsvqWmxx5IW9ljjHkZuSlqKk4XCaOTLUVS02APXeEXHobbvTLxHY_T0D844sqQ