System.out.println("Is a greater than or equal to b? " + isGreaterThanOrEqual);
JEP 458:启动多文件源码程序 (Launch Multi-File Source-Code Programs)
// 成员变量(实例变量)命名通常使用驼峰命名法(camelCase)
System.out.println("Hello, World!");
System.out.println("My name is " + firstName + " and I am " + age + " years old.");