chamwarren
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java 垃圾回收总结（1）
http://www.cnblogs.com/aigongsi/archive/2012/04/06/2434771.html
java垃圾回收总结(2)
http://www.cnblogs.com/aigongsi/archive/2012/04/13/2446166.html
import java.util.Scanner;
public class Fibonacci {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("pls input number");
int i = sc.nextInt();
for (int j = 1; j <= i; j++) {
int num ...
import java.util.Random;
public class ForEachFloat {
public static void main(String[] args) {
Random r = new Random(50);
float[] f = new float[10];
for(int i = 0 ; i < 10; i++) {
f[i] = r.nextFloat();
}
for(float fl: f) {
System.out.println("f:"+fl);
}
}
...
public class ListCharacters {
public static void main(String[] args) {
for (char c = 0; c < 128; c++) {
if(Character.isLowerCase(c)){
System.out.print(""+(int)c+":"+c+"\t");
if(((int)c) %5 == 0) {
System.out.print("\n");
}
...
1. this :代表对象，所在函数所属对象的引用
在定义功能时，如果该功能内部使用到了调用该功能的对象，这事就用this来表示这个对象
可以用于构造函数的调用 this (实际参数)；
this.成员属性/成员方法：
this ...
class Leaf{
int i ;
Leaf increment() {
i++;
return this;
}
public void print() {
System.out.print("i"+i);
}
public static void main(String[] args) {
Leaf lf = new Leaf();
lf.increment().increment().increment();
lf.print();
}
}
class Tree {
int height;
Tree() {
print("Planting a seedling");
height = 0;
}
Tree(int i) {
print("Creating new Tree that is "+ i + " feet tall");
height = i;
}
public void plant() {
print("Tree is " + height + " feet tall& ...
public class CastingNumbers{
public static void main(String[] args) {
double above = 0.7;
double below= 0.4;
System.out.println("above:"+above);
System.out.println("below:"+below);
System.out.println("(int)above:"+(int)above);
System.out.println(&qu ...
public class VowelsAndConsonants {
public static void main(String[] args) {
for (int i =0 ; i < 100 ; i++ ) {
char c = (char)(Math.random()*26+ 'a');
switch(c) {
case 'a':
case 'e':
case 'i':
case 'o':
case 'u':System.out.println("Vowels");
...