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Java一些面试问题总结

Can we overload the main method? A Java Constructor returns a value but, what? Can we create a program without main method? What are the six ways to use this keyword? Why is multiple inheritance not supported in Java? Why use ag..

Java基础学习常见问题及解决方案 常见问题1：double和float浮点数比较相等问题 package cn.javaBasic; public class TestJavaDataType { public static void main(String[] args) { double num1 = 0.1; float num2 = (float) (1.0/10); System.out.println(num1);//0.1