Java判断2个List集合是否相等(不考虑元素的顺序)

package com.lxk.model;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.util.Collection;
import java.util.Objects;
/**
 * Table metadata.
 *
 * @author lxk
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class TableMetaData {
  private Collection<ColumnMetaData> columnMetaData;
  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    TableMetaData that = (TableMetaData) o;
    if (columnMetaData.size() != that.getColumnMetaData().size()) {
      return false;
    }
    return columnMetaData.containsAll(that.getColumnMetaData());
  }
  @Override
  public int hashCode() {
    return Objects.hash(columnMetaData);
  }
}

package com.lxk.model;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.util.Objects;
/**
 * Column metadata.
 *
 * @author lxk
 */
@Data
@NoArgsConstructor
@AllArgsConstructor
public final class ColumnMetaData {
  private String columnName;
  private String columnType;
  private boolean primaryKey;
  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    ColumnMetaData that = (ColumnMetaData) o;
    return primaryKey == that.primaryKey &&
        Objects.equals(columnName, that.columnName) &&
        Objects.equals(columnType, that.columnType);
  }
  @Override
  public int hashCode() {
    return Objects.hash(columnName, columnType, primaryKey);
  }
  @Override
  public String toString() {
    return "ColumnMetaData{" +
        "columnName='" + columnName + '\'' +
        ", columnType='" + columnType + '\'' +
        ", primaryKey=" + primaryKey +
        '}';
  }
}

package com.lxk.commonTest;
import com.google.common.collect.Lists;
import com.lxk.model.ColumnMetaData;
import com.lxk.model.TableMetaData;
import java.util.Collection;
/**
 * 测试equals的各种情况
 *
 * @author lxk on 2018/9/17
 */
public class EqualsTest {
  public static void main(String[] args) {
    testCollectionEqual();
  }
  /**
   * 比较2个集合是否是相同的，不考虑集合的顺序，只要里面的元素确实相同即可。
   */
  private static void testCollectionEqual() {
    ColumnMetaData c1 = new ColumnMetaData("age1", "name", true);
    ColumnMetaData c2 = new ColumnMetaData("age2", "name", true);
    ColumnMetaData c3 = new ColumnMetaData("age3", "name", true);
    ColumnMetaData c4 = new ColumnMetaData("age4", "name", true);
    Collection<ColumnMetaData> list1 = Lists.newArrayList(c1, c2, c3);
    Collection<ColumnMetaData> list2 = Lists.newArrayList(c2, c3, c1);
    TableMetaData table1 = new TableMetaData(list1);
    TableMetaData table2 = new TableMetaData(list2);
    boolean equals = table1.equals(table2);
    System.out.println(equals);
  }
}