Packages java.lang.* utilize AbstractStringBuilder::build

Author: mkarg

src/java.base/share/classes/java/lang/Class.java

@@ -356,7 +356,7 @@ else if (isRecord())
 
             if (arrayDepth > 0) sb.append("[]".repeat(arrayDepth));
 
-            return sb.toString();
+            return sb.build();
         }
     }
 
@@ -1760,7 +1760,7 @@ private String getCanonicalName0() {
                     .append(enclosingName)
                     .append('.')
                     .append(simpleName)
-                    .toString();
+                    .build();
         }
     }
 
@@ -2742,7 +2742,7 @@ private String resolveName(String name) {
                 name = sb.append(baseName.replace('.', '/'))
                     .append('/')
                     .append(name)
-                    .toString();
+                    .build();
             }
         } else {
             name = name.substring(1);
@@ -3958,7 +3958,7 @@ public String descriptorString() {
                     .append('.')
                     .append(name, index + 1, name.length())
                     .append(';')
-                    .toString();
+                    .build();
         } else {
             String name = getName().replace('.', '/');
             return StringConcatHelper.concat("L", name, ";");

src/java.base/share/classes/java/lang/LiveStackFrameInfo.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -69,7 +69,7 @@ public String toString() {
             }
             retVal.append(")");
         }
-        return retVal.toString();
+        return retVal.build();
     }
 
     /*

src/java.base/share/classes/java/lang/ProcessHandleImpl.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -642,7 +642,7 @@ public String toString() {
                 sb.append(totalCpuDuration().toString());
             }
             sb.append(']');
-            return sb.toString();
+            return sb.build();
         }
     }
 }

src/java.base/share/classes/java/lang/Runtime.java

@@ -1397,7 +1397,7 @@ public String toString() {
                 }
             }
 
-            return sb.toString();
+            return sb.build();
         }
 
         /**

src/java.base/share/classes/java/lang/StackTraceElement.java

@@ -395,7 +395,7 @@ public String toString() {
         }
         sb.append(')');
 
-        return sb.toString();
+        return sb.build();
     }
 
     private static int length(String s) {

src/java.base/share/classes/java/lang/String.java

@@ -3319,7 +3319,7 @@ public String replace(CharSequence target, CharSequence replacement) {
             for (int i = 0; i < thisLen; ++i) {
                 sb.append(charAt(i)).append(replStr);
             }
-            return sb.toString();
+            return sb.build();
         }
     }
 

src/java.base/share/classes/java/lang/Thread.java

@@ -2068,7 +2068,7 @@ public String toString() {
         if (group != null)
             sb.append(group.getName());
         sb.append("]");
-        return sb.toString();
+        return sb.build();
     }
 
     /**

src/java.base/share/classes/java/lang/ThreadBuilders.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -460,7 +460,7 @@ public String toString() {
             sb.append("]/");
             String stateAsString = threadState().toString();
             sb.append(stateAsString.toLowerCase(Locale.ROOT));
-            return sb.toString();
+            return sb.build();
         }
     }
 }

src/java.base/share/classes/java/lang/VirtualThread.java

@@ -1270,7 +1270,7 @@ public String toString() {
             sb.append(stateAsString.toLowerCase(Locale.ROOT));
         }
 
-        return sb.toString();
+        return sb.build();
     }
 
     /**

src/java.base/share/classes/java/lang/classfile/CompoundElement.java

@@ -117,6 +117,6 @@ public void accept(E e) {
     default String toDebugString() {
         StringBuilder text = new StringBuilder();
         ClassPrinter.toYaml(this, ClassPrinter.Verbosity.TRACE_ALL, text::append);
-        return text.toString();
+        return text.build();
     }
 }