import java.util.Scanner;
class user{
String name;
int pwd;
public user(String name,int pwd) {
this.name=name;
this.pwd=pwd;
if(this.name=="ba" & this.pwd==123456) {
System.out.println("登录成功!");
}else {
System.out.println("登录失败,请重新登录!");
}
}
}
public class bank {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner scl = new Scanner(System.in);
System.out.println("用户名:");
String usename = scl.next();
System.out.println("密码:");
int usepwd = scl.nextInt();
user getuser = new user(usename,usepwd);
}
}
输入ba
输入123456
显示的是登录不成功
import java.util.Scanner;
class user{
String name;
int pwd;
public user(String name,int pwd) {
this.name=name;
this.pwd=pwd;
if(this.name.equals("ba") && this.pwd==123456) {
System.out.println("登录成功!");
}else {
System.out.println("登录失败,请重新登录!");
}
}
}
public class bank {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner scl = new Scanner(System.in);
System.out.println("用户名:");
String usename = scl.next();
System.out.println("密码:");
int usepwd = scl.nextInt();
user getuser = new user(usename,usepwd);
}
}
if(this.name.equals("ba") && this.pwd==123456) {
if(this.name=="ba" & this.pwd==123456) {
改为
if(this.name.equals("ba") && this.pwd==123456) {
字符串比较要用equals方法,条件与操作必须2个&&
import java.util.Scanner;
class user{
String name;
int pwd;
public user(String name,int pwd) {
this.name=name;
this.pwd=pwd;
if(this.name.equals("ba") && this.pwd==123456) {
System.out.println("登录成功!");
}else {
System.out.println("登录失败,请重新登录!");
}
}
}
public class Bank {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner scl = new Scanner(System.in);
System.out.println("用户名:");
String usename = scl.next();
System.out.println("密码:");
int usepwd = scl.nextInt();
user getuser = new user(usename,usepwd);
}
}
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