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System.out.ptintln(\} }

Public static void main(String []args){ Aclass a=new Aclass(); Aclass a1=new Bclass(); a.go(); a.go(); }

}

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A.Aclass B.Bclass Aclass Bclass C.Aclass D.Bclass Bclass Aclass 15. ·ÖÎöÒÔϳÌÐò Public class Test{

static void leftshift(int i,int j){

I<<=j; }

Public static void main(String []args){

int i=4,j=2; Leftshift(i,j);

System.out.println(i); } }

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import java.util.*;

public class Select7From36 {

public static void main(String[] args) { Random rd= new Random();

ArrayList allNum=new ArrayList(); //´´½¨ÓÐ7¸öÔªËØµÄIntegerÊý×é Integer result[]=____(1)____; int x;

for(int i=1;i<=36;i++){

allNum.add(new Integer(i)); }

for(int i=0;i<=6;i++){ x=____£¨2£©____;

result[i]=(Integer)allNum.get(x); allNum.remove(x); }

for(int i=0;i

System.out.print(result[i]+\ \ } } }

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1¡¢£¨16-36£©ÔĶÁÏÂÃæµÄ³ÌÐò´úÂ룬²¢»Ø´ðÎÊÌâ¡£ String s1=new String(\

String s2=new String(\ boolean b1=s1.equals(s2);

boolean b2=s1==s2;

System.out.print(b1+\ \

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import java.io.*; public class Test {

public static void main(String args[]) throws IOException { BufferedReader buf=new BufferedReader(

new InputStreamReader(System.in)); while(true) {

String str=buf.readLine(); if(str.equals(\ break;

int x=Integer.parseInt(str); System.out.println(x*x); } } }

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NumberFormatException 2¡¢£¨16-38£©¡¢Ð´³öÏÂÃæµÄ³ÌÐò±àÒë¡¢ÔËÐкóµÄ½á¹û¡£

public class Test{

public static void main(String args[]) { new Student(\ new Student(\ new Student(\

System.out.println(\ Student.print(); } }

class Student {

protected String name; protected char sex;

protected int chinese; protected int english; protected Student next; static Student list;

Student(String name, char sex, int chinese,int english) { this.name=name; this.sex=sex;

this.chinese=chinese; this.english=english; this.next=list; list=this; }

static void print() { Student friend=list; if(friend==null)

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