first commit

hrmsEjb/net/sf/jasperreports/engine/util/Pair.java

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+package net.sf.jasperreports.engine.util;
+
+import java.io.Serializable;
+
+public class Pair implements Serializable {
+  private static final long serialVersionUID = 1L;
+  
+  private final Object o1;
+  
+  private final Object o2;
+  
+  private final int hash;
+  
+  public Pair(Object o1, Object o2) {
+    this.o1 = o1;
+    this.o2 = o2;
+    this.hash = computeHash();
+  }
+  
+  private int computeHash() {
+    int hashCode = (this.o1 == null) ? 0 : this.o1.hashCode();
+    hashCode *= 31;
+    hashCode += (this.o2 == null) ? 0 : this.o2.hashCode();
+    return hashCode;
+  }
+  
+  public boolean equals(Object o) {
+    if (o == this)
+      return true; 
+    if (o == null || !(o instanceof Pair))
+      return false; 
+    Pair p = (Pair)o;
+    if ((p.o1 == null) ? (this.o1 == null) : (this.o1 != null && p.o1.equals(this.o1)))
+      if ((p.o2 == null) ? (this.o2 == null) : (this.o2 != null && p.o2.equals(this.o2))); 
+    return false;
+  }
+  
+  public int hashCode() {
+    return this.hash;
+  }
+  
+  public String toString() {
+    return "(" + String.valueOf(this.o1) + ", " + String.valueOf(this.o2) + ")";
+  }
+}