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sysout 하고 ctrl + space하면 println문구 자동완성 소스코드: https://github.com/egoing/java1/tree/master/Data_and_operation GitHub - egoing/java1 Contribute to egoing/java1 development by creating an account on GitHub. github.com // float -> int casting int e = (int) 1.1; // 자동 캐스팅 double b = 1; 출처: JAVA1 - YouTube