java - 将项目导入另一台计算机时出现编码错误

Question

我有一个自己创建的项目，在家里完成时运行完美，没有任何错误。但是，当我将项目导入学校的计算机时，我收到了来自两个不同类(class)的两个代码错误。

第一个错误

主类

bank.getAccounts().forEach((i,b)->System.out.println(b));

Illegal start of type ) expected;

Illegal start of expression ; expected;

第二个错误

BankProcess 类

bankAccounts.remove(bankAccount.getAccountId(), bankAccount);

No suitable methods found for remove....

这会发生吗？家用电脑上不会出现此类错误。

package Coursework1;
import java.util.*;

public class Bank {

  //Creates a new treemap in which Bank Accounts will be stored in.
  private TreeMap < Integer, BankAccount > bankAccounts = new TreeMap < Integer, BankAccount > ();

  //This method returns all bank accounts in the treemap.
  public TreeMap < Integer, BankAccount > getAccounts() {
    return bankAccounts;
  }

  //This method adds a bank account to the treemap.
  public void setAccounts(TreeMap < Integer, BankAccount > accounts) {
    this.bankAccounts = accounts;
  }

  //This method return a bank account using the account number.
  public BankAccount getAccount(Integer accountNumber) {
    return bankAccounts.get(accountNumber);
  }

  //This method removes a bank account from the treemap.
  public void removeAccounts(TreeMap < Integer, BankAccount > accounts) {
    this.bankAccounts = accounts;
  }
}

Answer 1

据我所知，Java 7 及更早版本不支持像您这样的 forEach 语句(lambda 表达式)。所以我猜学校计算机没有安装 Java 8。