Java private Output out ; 是定义Field?Output 是什么类型的?

Java private Output out ; 是定义Field?Output 是什么类型的? JAVA中private 为什么要用private? public private和private区别?java中 private void walk（）｛｝和 public private void talk(){}区别? private java.lang.String name;这是在定义什么? Output 这个Java程序,month为什么要减1呢?import java.util.*;public class PersonClass{ private int No; private String name; private boolean sex; private Date birthday; public PersonClass(){} public PersonClass(int No,String name,boo private Private JAVA中定义private Socket socket与Socket socket=new Socket的区别? Java write a program to read an integer,n,from the keyboard and output n row of pascal's triangle. java java //玩家列表类 public class PlayerList { private int PlayerNum;//玩家现有数量 private Player[]list;//本人用java写的一段代码,求错误,加怎么改 java如何产生不同的随机数import java.math.*;public class T1 {private static boolean ck(int[] a) {boolean bool = false;for(int i=0;i public/private/protected的具体区别好快啊 但是我看不懂这个问题是指在JAVA语言中 boolean在Java中什么意思private static boolean getArg(String input,int start)这个是完整的那行 selection does not contain a main type的问题import java.util.Scanner;public class Population {private String name;private int population;private double growthRate;public void readInput(){Scanner keyboard = new Scanner(System.in);System.out.println java 中的 pack（） package net.mindview.util;import java.awt.*;import java.awt.event.*;public class Eog extends Frame{private Panel panel;private Label label;private String[] names={7,8,9,+,4,5,6,-,1,2,3,*,0,.,=,/}